chore: add read the docs pipeline

[RealAnna]

adds a link of the type https://keptn--PR#.org.readthedocs.build/PR#/ to a new pr that changes docs

see example in my fork here RealAnna#48

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (ba3d8a5) 86.56% compared to head (727ffad) 86.56%.
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2780   +/-   ##
=======================================
  Coverage   86.56%   86.56%           
=======================================
  Files         169      169           
  Lines       11178    11178           
=======================================
  Hits         9676     9676           
  Misses       1220     1220           
  Partials      282      282           

Flag	Coverage Δ
certificate-operator	67.42% <ø> (ø)
component-tests	56.08% <ø> (ø)
lifecycle-operator	86.28% <ø> (ø)
metrics-operator	87.43% <ø> (ø)
scheduler	36.53% <ø> (ø)

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[sonarqubecloud]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[RealAnna]

Team decided not to implement this feature