feat: add KeptnConfig API

[mowies]

This PR

• adds the new KeptnConfig CRD under the options API group
• moves the OTel setup code into a separate otel_utils.go common file
• removes the OTel collector URL env var from the operator

Closes #593

[codecov]

Codecov Report

Merging #651 (6cdb3e3) into main (6ddbb6d) will increase coverage by 0.30%.
The diff coverage is 70.47%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #651      +/-   ##
==========================================
+ Coverage   57.38%   57.69%   +0.30%     
==========================================
  Files          89       91       +2     
  Lines        7012     7243     +231     
==========================================
+ Hits         4024     4179     +155     
- Misses       2822     2894      +72     
- Partials      166      170       +4     

Impacted Files	Coverage Δ
operator/apis/lifecycle/v1alpha2/common/common.go	100.00% <ø> (ø)
operator/controllers/common/otel_utils.go	66.17% <66.17%> (ø)
operator/controllers/common/metrics.go	84.48% <82.35%> (-2.85%)	⬇️
...ator/controllers/options/keptnconfig_controller.go	82.50% <90.90%> (ø)

Flag	Coverage Δ
component-tests	48.82% <0.00%> (-4.44%)	⬇️
keptn-lifecycle-operator	53.60% <70.47%> (+0.49%)	⬆️
klt-cert-manager	67.50% <ø> (ø)
scheduler	21.17% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication