docs:add release GitHub Action.

[SkyeBeFreeman]

PR Type

Documentation content changes.

Describe what this PR does for and how you did.

Adding the issue link (#xxx) if possible.

fixes #980

Note

Checklist

• Add information of this PR to CHANGELOG.md in root of project.
• Add documentation in javadoc or comment below the PR if necessary.

Checklist (Optional)

• Will pull request to branch of 2020.0.
• Will pull request to branch of 2022.0.

[codecov]

Codecov Report

Merging #1006 (3644f6a) into 2021.0 (d1576f7) will decrease coverage by 0.10%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             2021.0    #1006      +/-   ##
============================================
- Coverage     83.01%   82.91%   -0.10%     
- Complexity     1606     1607       +1     
============================================
  Files           239      239              
  Lines          5321     5322       +1     
  Branches        621      622       +1     
============================================
- Hits           4417     4413       -4     
- Misses          549      555       +6     
+ Partials        355      354       -1     

Impacted Files	Coverage Δ
...loud/polaris/context/PolarisSDKContextManager.java	90.27% <100.00%> (-1.28%)	⬇️

... and 1 file with indirect coverage changes