Add CI_PIPELINE_RERUNS environment variable

[M31ancholy]

• Add RerunCount field to pipeline model and expose it as CI_PIPELINE_RERUNS environment variable when > 0.
• Add RerunCount field to Pipeline model
• Add database migration for rerun_count column
• Set CI_PIPELINE_RERUNS env var in pipeline metadata
• Add unit and e2e tests

Closes #5876

[6543]

@M31ancholy also wouod be good to resolve conflicts :)

[M31ancholy]

I realized that i might also need to update the docs, let me do this

[M31ancholy]

I realized that i might also need to update the docs, let me do this

The changes look huge, but actually I only added a single line to explain CI_PIPELINE_RERUNS. All the other changes were caused by GoLand's Markdown formatter.

[6543]

now you just have to address issues pointed out by the ci ...

[woodpecker-bot]

Surge PR preview deployment was removed

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 41.63%. Comparing base (6987ecd) to head (0d48076).
⚠️ Report is 8 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6588      +/-   ##
==========================================
+ Coverage   41.59%   41.63%   +0.03%     
==========================================
  Files         432      432              
  Lines       28781    28785       +4     
==========================================
+ Hits        11972    11985      +13     
+ Misses      15732    15726       -6     
+ Partials     1077     1074       -3     

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