Add some more Roslyn generated file suffixes

[georgevanburgh]

As discussed in #1084, coverlet fails to generate metrics for assemblies that contain source generators. This was improved in #1091 by skipping files that end in .g.cs. However, some source generators produce files which do not match this pattern - for example protobuf-net.BuildTools. Obviously coverlet is never going to be able to match against every possible generated file naming convention - which is where the suggestion in #1164 comes from. I understand if you'd rather use the ideas from that issue in preference to this change, however, I thought it might make sense to add the list of conventions used internally by Microsoft.CodeAnalysis to the logic introduced in #1091 for detecting auto-generated files (selfishly, this would also fix the issues I'm having with projects that reference protobuf-net.BuildTools 😇).

[petli]

Thank you! I think it should be pretty safe to add these additional conditions, it is quite unlikely that it will result in a module being instrumented that wasn't before.

[MarcoRossignoli]

thanks!