feat: Introduce release_impl.yml workflow to automatically create rel…

[mathbunnyru]

…eases

Work on: #1779

Features:

• works in PRs (everything but actually pushing a release)
• supports custom release notes header
• removes previous release for nightly releases

The idea is that creating releases should be automatic or almost automatic and should work more or less the same for nightly and actual releases.

I haven't yet implemented automatic release process for the actual release (and don't plan to do it here), but this PR will make it much easier to implement it in the future.
I suggest deferring discussion of how actual releases should work till the next PR.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.76%. Comparing base (427ba47) to head (211ee59).
Report is 85 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2043      +/-   ##
===========================================
+ Coverage    72.71%   72.76%   +0.05%     
===========================================
  Files          333      355      +22     
  Lines        13525    14697    +1172     
  Branches      6881     7464     +583     
===========================================
+ Hits          9835    10695     +860     
- Misses        1785     1975     +190     
- Partials      1905     2027     +122     

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

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[godexsoft]

👍