Add CS PackageRating rate form and view

[Oksamies]

[!WARNING] This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite. Learn more

• #934 : 2 dependent PRs (#935 , #937 )
• #1024
• #1025
• #1023 👈 (View in Graphite)
• #1044
• #1043
• master

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Please upload report for BASE (06-24-Make_all_DRF_endpoints_require_Auth_by_default@09f7859). Learn more about missing BASE report.

:exclamation: Current head 72742f3 differs from pull request most recent head b657297

Please upload reports for the commit b657297 to get more accurate results.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## 06-24-Make_all_DRF_endpoints_require_Auth_by_default #1023 +/- ## ======================================================================================= Coverage ? 93.00% ======================================================================================= Files ? 316 Lines ? 9130 Branches ? 810 ======================================================================================= Hits ? 8491 Misses ? 530 Partials ? 109 ```

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