Add stream profiling

[johanpel]

The original goal of this PR was to add stream profiling, but I fixed a whole bunch of stuff with it to make that and some future improvements easier.

With this profiling addition, users can profile their applications and discover the utilization of streams during run-time. For now it is supported in the generate design and simulation path, but the run-time library should probably still implement some facility for it.

• Redesigned type system to allow literal, parameter and expression nodes to be generics for types.
• Reduced verbosity of shared object construction functions.
• Removed explicit Stream type and made it a sugaring of Record.
• Added tests and fixed numerous nasty bugs.
• Follow file naming convention of vhdmmio (e.g. use .gen.vhd for generated files.) Fixes #201
• Add schema metadata options: "fletcher_profile" and "fletcher_bus_spec"
• Apply syntactical changes to Arrow's metadata functions to Fletcher metadata facilities. I.e. using "WithMeta..." rather than "AppendMeta...".
• Made a separate header for metadata keys with more docs.
• Exit program on default on error or higher logging levels. This still needs improvement in general.
• Reflect restructuring of Cerata to Fletchgen / make use of type generics.
• Make some Fletchgen internal types less verbose to construct shared objects out of.
• Full interface design is now built from the bottom-up rather than top-down.
• Implement a profiling pass. Can be enabled through field metadata.
• Somewhat improve bus infrastructure generation in preparation of generating ArrayReaders/Writers.
• Remove seperate strobe generic for write path in interconnect
• Remove templates from hardware folder, they are for now kept in header files in Fletchgen
• Add Profiler component
• Improve documentation

[codecov[bot]]

Codecov Report

Merging #203 into develop will not change coverage. The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop     #203   +/-   ##
========================================
  Coverage    88.03%   88.03%           
========================================
  Files           50       50           
  Lines         4906     4906           
========================================
  Hits          4319     4319           
  Misses         587      587

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Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 5c194a8...0502992. Read the comment docs.

[johanpel]

While restructuring this includes a fix for #201

[codecov[bot]]

Codecov Report

Merging #203 into develop will not change coverage. The diff coverage is 100%.

@@           Coverage Diff            @@
##           develop     #203   +/-   ##
========================================
  Coverage    88.03%   88.03%           
========================================
  Files           50       50           
  Lines         4906     4906           
========================================
  Hits          4319     4319           
  Misses         587      587

Impacted Files	Coverage Δ
hardware/arrays/ArrayWriter.vhd	95.12% <ø> (ø)	:arrow_up:
hardware/interconnect/BusWriteBuffer.vhd	96% <ø> (ø)	:arrow_up:
hardware/arrays/test/arraywriter/prim32_epc_tc.vhd	96.96% <ø> (-0.02%)	:arrow_down:
hardware/interconnect/BusWriteArbiterVec.vhd	98.87% <ø> (-0.02%)	:arrow_down:
hardware/arrays/Array_pkg.vhd	100% <ø> (ø)	:arrow_up:
...dware/arrays/test/arraywriter/listprim8epc4_tc.vhd	98.17% <ø> (ø)	:arrow_up:
hardware/buffers/BufferWriter.vhd	99.11% <ø> (ø)	:arrow_up:
hardware/arrays/test/arraywriter/prim32_tc.vhd	96.93% <ø> (ø)	:arrow_up:
hardware/arrays/ArrayWriterLevel.vhd	77.27% <ø> (ø)	:arrow_up:
hardware/interconnect/test/BusChecking_pkg.vhd	100% <ø> (ø)	:arrow_up:
... and 18 more

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Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update bf33503...ea1f525. Read the comment docs.