Implement MBIN Header Format v2

A new header format v2 has been planned to:

fix a showstopping bug that prevents libMBIN from properly utilizing the TemplateGUID.
change how the libMBIN version is stored in the MBIN so that all components can be saved.
prepare for implementation of MBIN File format v2 features.
standardize how future format versions are handled.

Requirements:

must not override the vanilla TemplateGUID field
new format should be backward compatible (seamless upgrade from previous versions)
should be able to detect the correct format version of an MBIN file
should be able to create a new header for a specified format
should be able to implicitly convert between header formats
should be able to create, load or save either format version

Tasks:

[x] [#83] create a smoke test to verify that any hijacked fields in the new format do not conflict with NMS.exe
[x] [#84] flesh out / formalize v2 spec to match actual implementation
[x] [#85] document how v0 v1 and v2+ are detected and handled
[x] [#86] implement support for new v2 spec
[x] [#87] create unit tests to verify general code integrity of the MBINHeader struct
[x] [#87] create a unit test to verify that the correct header format version can be detected
[x] [#87] create a unit test to verify that each header format can be handled correctly
[x] [#87] create a unit test to verify that header formats are backward compatible
[x] [#87] create a unit test to verify that a new header can be created using a specified format

Acceptance Criteria:

blocks: #65 blocked by: #86 #87

monkeyman192 / MBINCompiler