Support ignoring a whole module by #[frb(ignore)] on module ; Support /// frb:...

[fzyzcjy]

Changes

Close #2074

Checklist

• An issue to be fixed by this PR is listed above.
• New tests are added to ensure new features are working. Please refer to this page to see how to add a test.
• ./frb_internal precommit --mode slow (or fast) is run (it internal runs code generator, does auto formatting, etc).
• If this PR adds/changes features, documentations (in the ./website folder) are updated.
• CI is passing. Please refer to this page to see how to solve a failed CI.

Remark for PR creator

• ./frb_internal --help shows utilities for development.
• If fzyzcjy does not reply for a few days, maybe he just did not see it, so please ping him.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.12%. Comparing base (954c966) to head (e7c2176).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2085   +/-   ##
=======================================
  Coverage   99.12%   99.12%           
=======================================
  Files         473      473           
  Lines       18922    18963   +41     
=======================================
+ Hits        18756    18798   +42     
+ Misses        166      165    -1     

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