COMP: Fix Cxx17 build error

[lassoan]

The old boost version that was included in the library was very old and it was not compatible with Cxx17 anymore. Instead of bringing in 1500+ files just for command-line argument parsing, updated the library to use CLI11 for this purpose.

CLI11.hpp was downloaded from https://github.com/CLIUtils/CLI11/releases/tag/v2.2.0

[jcfr]

Thanks @lassoan 🙏💯

The overall change makes sense.

Would it be possible to display the output of --help before/after ?

[lassoan]

Before:

Command line flags:
  -a [ --alpha ] arg                 initial alpha value
  -s [ --alpha_short ] arg           alpha short value for constant element 
                                     sizing method
  -l [ --alpha_long ] arg            alpha long value for constant element 
                                     sizing method
  -b [ --background_mesh ] arg       input background mesh
  -B [ --blend_sigma ] arg           blending function sigma for input(s) to 
                                     remove alias artifacts
  -m [ --element_sizing_method ] arg background mesh mode (adaptive [default], 
                                     constant)
  -F [ --feature_scaling ] arg       feature size scaling (higher values make a
                                     coarser mesh)
  -j [ --fix_tet_windup ]            ensure positive Jacobians with proper 
                                     vertex wind-up
  -h [ --help ]                      display help message
  -i [ --input_files ] arg           material field paths or segmentation path
  -L [ --lipschitz ] arg             maximum rate of change of element size (1 
                                     is uniform)
  -f [ --output_format ] arg         output mesh format (tetgen [default], 
                                     scirun, matlab, vtkUSG, vtkPoly, ply 
                                     [surface mesh only])
  -n [ --output_name ] arg           output mesh name (default 'output')
  -o [ --output_path ] arg           output path prefix
  -r [ --record ] arg                record operations on tets from input file
  -R [ --sampling_rate ] arg         volume sampling rate (lower values make a 
                                     coarser mesh)
  -I [ --indicator_functions ]       the input files are indicator functions
  --simple                           use simple interface approximation
  -z [ --sizing_field ] arg          sizing field path
  -t [ --strict ]                    warnings become errors
  -e [ --strip_exterior ]            strip exterior tetrahedra
  -w [ --write_background_mesh ]     write background mesh
  -v [ --verbose ]                   enable verbose output
  -V [ --version ]                   display version information

After:

Cleaver - A MultiMaterial Conforming Tetrahedral Meshing Library - mesher
Usage: c:\D\SlicerSegmentMesher_R\bin\Release\cleaver-cli.exe [OPTIONS]

Options:
  -h,--help                   Print this help message and exit
  -a,--alpha FLOAT            initial alpha value
  -s,--alpha_short FLOAT      alpha short value for constant element sizing method
  -l,--alpha_long FLOAT       alpha long value for constant element sizing method
  -b,--background_mesh TEXT   input background mesh
  -B,--blend_sigma FLOAT      blending function sigma for input(s) to remove alias artifacts
  -m,--element_sizing_method TEXT
                              background mesh mode (adaptive [default], constant)
  -F,--feature_scaling FLOAT  feature size scaling (higher values make a coarser mesh)
  -j,--fix_tet_windup         ensure positive Jacobians with proper vertex wind-up
  -i,--input_files TEXT ...   material field paths or segmentation path
  -L,--lipschitz FLOAT        maximum rate of change of element size (1 is uniform)
  -f,--output_format TEXT     output mesh format (tetgen [default], scirun, matlab, vtkUSG, vtkPoly, ply [surface mesh only])
  -n,--output_name TEXT       output mesh name (default 'output')
  -o,--output_path TEXT       output path prefix
  -r,--record TEXT            record operations on tets from input file
  -R,--sampling_rate FLOAT    volume sampling rate (lower values make a coarser mesh)
  -I,--indicator_functions    the input files are indicator functions
  --simple                    use simple interface approximation
  -z,--sizing_field TEXT      sizing field path
  -t,--strict                 warnings become errors
  -e,--strip_exterior         strip exterior tetrahedra
  -w,--write_background_mesh  write background mesh
  -v,--verbose                enable verbose output
  -V,--version                display version information

[jcfr]

Topic has been rebased, and the commits split into three different ones to further streamline the review process.

Outputs corresponding to the integration with CLI11 and associated with the --help parameter for mesh-info, cleaver-cli and sfcreator CLIs can be inspected below.

./mesh-info --help

``` Cleaver - A MultiMaterial Conforming Tetrahedral Meshing Library - mesh information Usage: ./mesh-info [OPTIONS] Options: -h,--help Print this help message and exit -i,--input TEXT REQUIRED input mesh -v,--verbose enable verbose output ```

./cleaver-cli --help

``` Cleaver - A MultiMaterial Conforming Tetrahedral Meshing Library - mesher Usage: ./cleaver-cli [OPTIONS] Options: -h,--help Print this help message and exit -a,--alpha FLOAT initial alpha value -s,--alpha_short FLOAT alpha short value for constant element sizing method -l,--alpha_long FLOAT alpha long value for constant element sizing method -b,--background_mesh TEXT input background mesh -B,--blend_sigma FLOAT blending function sigma for input(s) to remove alias artifacts -m,--element_sizing_method TEXT background mesh mode (adaptive [default], constant) -F,--feature_scaling FLOAT feature size scaling (higher values make a coarser mesh) -j,--fix_tet_windup ensure positive Jacobians with proper vertex wind-up -i,--input_files TEXT ... material field paths or segmentation path -L,--lipschitz FLOAT maximum rate of change of element size (1 is uniform) -f,--output_format TEXT output mesh format (tetgen [default], scirun, matlab, vtkUSG, vtkPoly, ply [surface mesh only]) -n,--output_name TEXT output mesh name (default 'output') -o,--output_path TEXT output path prefix -r,--record TEXT record operations on tets from input file -R,--sampling_rate FLOAT volume sampling rate (lower values make a coarser mesh) -I,--indicator_functions the input files are indicator functions --simple use simple interface approximation -z,--sizing_field TEXT sizing field path -t,--strict warnings become errors -e,--strip_exterior strip exterior tetrahedra -w,--write_background_mesh write background mesh -v,--verbose enable verbose output -V,--version display version information ```

./sfcreator --help

``` Cleaver - A MultiMaterial Conforming Tetrahedral Meshing Library - sizing field creator Usage: ./sfcreator [OPTIONS] Options: -h,--help Print this help message and exit -v,--verbose enable verbose output --version display version information --material_fields TEXT ... REQUIRED material field paths --lipschitz FLOAT maximum rate of change of element size (1 is uniform) --feature_scaling FLOAT feature size scaling (higher values make a coarser mesh) --sampling_rate FLOAT volume sampling rate (lower values make a coarser mesh) --output TEXT output path --padding INT volume padding ```

[lassoan]

Please merge. Otherwise we need to switch to a fork to make the SegmentMesher Slicer extension work again.