feat: add otel collector uri flag

[L3o-pold]

This PR

• adds otelCollectorUri attribute for FlagSourceConfiguration CRD to configure OTEL collector

Related Issues

Fixes #512

Notes

Follow-up Tasks

How to test

[codecov]

Codecov Report

Merging #513 (85ead0a) into main (e740068) will increase coverage by 0.03%.
The diff coverage is 85.00%.

@@            Coverage Diff             @@
##             main     #513      +/-   ##
==========================================
+ Coverage   82.67%   82.70%   +0.03%     
==========================================
  Files          22       22              
  Lines        1397     1417      +20     
==========================================
+ Hits         1155     1172      +17     
- Misses        205      207       +2     
- Partials       37       38       +1     

Files Changed	Coverage Δ
...pis/core/v1alpha2/flagsourceconfiguration_types.go	100.00% <ø> (ø)
...pis/core/v1alpha3/flagsourceconfiguration_types.go	100.00% <ø> (ø)
...pis/core/v1alpha1/flagsourceconfiguration_types.go	97.09% <25.00%> (-1.72%)	⬇️
...ore/v1alpha2/flagsourceconfiguration_conversion.go	100.00% <100.00%> (ø)
...ore/v1alpha3/flagsourceconfiguration_conversion.go	100.00% <100.00%> (ø)
controllers/common/flagd-injector.go	90.88% <100.00%> (+0.36%)	⬆️

Flag	Coverage Δ
unit-tests	82.70% <85.00%> (+0.03%)	⬆️

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[Kavindu-Dodan]

@L3o-pold thank you for this contribution 🎉

Only thing missing from my point of view is the readme update for helm chart - https://github.com/open-feature/open-feature-operator/blob/main/chart/open-feature-operator/README.md#sidecar-configuration

[beeme1mr]

Awesome, thanks!