feat: add apache 2.0 license to python flyteidl

[michaeltinsley]

Tracking issue

#4771

Close #4771

Why are the changes needed?

Currently the flyteidl Python library does not have a license specified in the metadata. Whilst the license is specified for the repository, specifying it for the library is useful for license checks.

What changes were proposed in this pull request?

Specify the license in the flyteidl setup.py

How was this patch tested?

N/A

Setup process

Screenshots

Check all the applicable boxes

• I updated the documentation accordingly.
• All new and existing tests passed.
• All commits are signed-off.

Related PRs

Docs link

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (abef3f5) 58.54% compared to head (298fa8c) 58.54%.
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4786      +/-   ##
==========================================
- Coverage   58.54%   58.54%   -0.01%     
==========================================
  Files         625      625              
  Lines       53669    53669              
==========================================
- Hits        31423    31418       -5     
- Misses      19731    19734       +3     
- Partials     2515     2517       +2     

Flag	Coverage Δ
unittests	58.54% <ø> (-0.01%)	⬇️

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

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[pingsutw]

Thank you