[repo] Include license files in packages

[CodeBlanch]

Relates to #5187

Changes

• Include license files in packages.

• Rename LICENSE -> LICENSE.TXT and THIRD-PARTY-NOTICES -> THIRD-PARTY-NOTICES.TXT. Without a file extension when packaged they end up going into their own folders. With a file extension they end up in the root:

  

Details

For this work I am using dotnet/runtime as guide:

• https://github.com/dotnet/runtime/blob/8bb7b2ac092a6580b1cc247bc705e737c2b0260d/Directory.Build.props#L357
• https://github.com/dotnet/runtime/blob/8bb7b2ac092a6580b1cc247bc705e737c2b0260d/Directory.Build.targets#L62-L71

Merge requirement checklist

• CONTRIBUTING guidelines followed (nullable enabled, static analysis, etc.)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (9d8ef70) 83.43% compared to head (b839628) 83.49%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5192      +/-   ##
==========================================
+ Coverage   83.43%   83.49%   +0.05%     
==========================================
  Files         297      297              
  Lines       12396    12395       -1     
==========================================
+ Hits        10343    10349       +6     
+ Misses       2053     2046       -7     

Flag	Coverage Δ
unittests	83.49% <ø> (+0.05%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

see 6 files with indirect coverage changes

[reyang]

Do we want this? .NET seems to use false. https://github.com/dotnet/runtime/blob/8bb7b2ac092a6580b1cc247bc705e737c2b0260d/Directory.Build.props#L355

[CodeBlanch]

I noticed that too. Not sure why we have true there TBH. I'll bring up on the next SIG for discussion.

[reyang]

Not a blocker for this PR.