Add suppression ability

[stan-sz]

Fixes #61

[codecov]

Codecov Report

Merging #72 (ce8f5dd) into main (dd16a92) will increase coverage by 0.73%.
Report is 2 commits behind head on main.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #72      +/-   ##
==========================================
+ Coverage   87.32%   88.05%   +0.73%     
==========================================
  Files           3        3              
  Lines         418      452      +34     
==========================================
+ Hits          365      398      +33     
- Misses         53       54       +1     

Files Changed	Coverage Δ
src/E2ETests/E2ETests.cs	91.02% <100.00%> (+0.78%)	⬆️
src/Tasks/CollectDeclaredReferencesTask.cs	87.74% <100.00%> (+0.40%)	⬆️

[erikmav]

Needs reference documentation in README.md in the ## How to use section - perhaps:

Disabling a rule on a reference

To turn off a rule on a specific project or package reference, add the relevant RTxxxx code to a NoWarn metadata attribute. For example:

<ProjectReference Include="../Other/Project.csproj" NoWarn="RT0002" />

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In reply to: 1720026036

[erikmav]

I would also move the ## Rules section above ## How to use to introduce the RT codes earlier.

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In reply to: 1720026036

[erikmav]

[stan-sz]

I have realized that the nowarn info does not have to be passed to the analyzer. Just references with appropriate nowarn attribute will be swallowed in the msbuild task

[dfederm]

I have realized that the nowarn info does not have to be passed to the analyzer. Just references with appropriate nowarn attribute will be swallowed in the msbuild task

Yea that's what I was thinking. Just filter it on the "Declared" side.

[stan-sz]

Yea that's what I was thinking. Just filter it on the "Declared" side.

OTOH the current implementation would allow to report useless suppressions.

[erikmav]

Verified this allowed me to fix RT0002 issues in an affected repo. Found a NullRefException, sending PR for it.