ci: automatic testing/building of hub images on new release

[cristianmtr]

v2

• don't bump Jina version, as it's not used by the builder
• bump dummy field of timestamp
• check if combination of module version + jina version have been tested before (by looking up PR name)
• only open Draft PRs
• only open issues if the checks fail
• close PRs

v1

• traverse list of modules
• remove those that have opened issues
• try to open PR to bump version and add new jina version
• wait for PR checks to finish
• if they fail, open issue in hub
• allow for more configuration of workflow (for future separation into its own Marketplace action)

This will be submitted as-is, and the work for the GitHub Action hub builder will be another PR.

[codecov]

Codecov Report

Merging #1298 (eeb83a1) into master (895112e) will decrease coverage by 0.05%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1298      +/-   ##
==========================================
- Coverage   83.37%   83.31%   -0.06%     
==========================================
  Files         101      101              
  Lines        6705     6706       +1     
==========================================
- Hits         5590     5587       -3     
- Misses       1115     1119       +4     

Impacted Files	Coverage Δ
jina/peapods/container.py	88.40% <100.00%> (-2.78%)	⬇️
jina/drivers/querylang/select.py	79.31% <0.00%> (-6.90%)	⬇️
jina/peapods/grpc_asyncio.py	75.51% <0.00%> (-1.03%)	⬇️
jina/docker/hubio.py	70.40% <0.00%> (+0.28%)	⬆️

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[JoanFM]

The rest, LGTM!