Mark Generated C/C++ files as generated

[Kronos3]

Before:

$ github-linguist
86.58%  11423656   C++
10.58%  1395476    Scala
1.39%   183882     Fortran
1.32%   173503     Shell
0.08%   10088      Emacs Lisp
0.03%   4287       Vim Script
0.02%   3215       Python

After:

$ github-linguist
76.57%  1395476    Scala
10.09%  183882     Fortran
9.52%   173503     Shell
2.85%   52011      C++
0.55%   10088      Emacs Lisp
0.24%   4287       Vim Script
0.18%   3215       Python

I believe the remaining C++ files are our .hpp for abstract type definitions. We can also mark the .fpp files as any language other than Fortran if we wanted to (though the language must exist according to github-linguist unfortunately).

Here's the set of languages understood by linguist https://github.com/github-linguist/linguist/blob/main/vendor/README.md.

[bocchino]

Thanks, this looks good! Question: Do you know what "vendored" is intended to be used for? It's a bit of an unusual term. I suppose we don't use "generated" for the C++ test output files because they are checked into the repo.

[Kronos3]

Here's the set of overrides that linguist allows:

https://github.com/github-linguist/linguist/blob/main/docs/overrides.md#summary

Git attribute	Defined in	Effect on file
linguist-detectable	[languages.yml]	Included in stats, even if language's type is data or prose
linguist-documentation	[documentation.yml]	Excluded from stats
linguist-generated	[generated.rb]	Excluded from stats, hidden in diffs
linguist-language=name	[languages.yml]	Highlighted and classified as name
linguist-vendored	[vendor.yml]	Excluded from stats

There is "generated" but that means it won't show up in the diffs. That's usually used for code thats generated in someones tree that just does boilerplate. Since the generated files are part of the output, we definitely want the diffs.

[bocchino]

Looks good!