Integrate checkin worker

[toondaey]

DOG-5739

This is an implementation of the CheckinWorker in the extractor. It is the final part of this PR.
It also includes removal of some tests which were related to the previous implementation.

[codecov]

Codecov Report

❌ Patch coverage is 80.00000% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 80.38%. Comparing base (80d0b1e) to head (9d23c5d).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
cognite/extractorutils/unstable/core/runtime.py	37.50%	5 Missing ⚠️
cognite/extractorutils/unstable/core/base.py	90.90%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #466      +/-   ##
==========================================
+ Coverage   79.94%   80.38%   +0.44%     
==========================================
  Files          43       43              
  Lines        3904     3890      -14     
==========================================
+ Hits         3121     3127       +6     
+ Misses        783      763      -20     

Files with missing lines	Coverage Δ
...te/extractorutils/unstable/configuration/models.py	84.97% <100.00%> (+0.08%)	⬆️
...ite/extractorutils/unstable/core/checkin_worker.py	85.55% <100.00%> (+8.02%)	⬆️
cognite/extractorutils/unstable/core/base.py	76.60% <90.90%> (+2.24%)	⬆️
cognite/extractorutils/unstable/core/runtime.py	71.27% <37.50%> (-1.10%)	⬇️

🚀 New features to boost your workflow:

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

[einarmo]

One small comment, but this seems pretty reasonable. Ends up being a nice separation of concerns as well, removing checkin logic from the base extractor.

[einarmo]

🦄