feat: use smart git-http-server

[CasLubbers]

📌 Summary

🔍 Reviewer Notes

🧹 Checklist

• Code is readable, maintainable, and robust.
• Unit tests added/updated

[j-zimnowoda]

1. I have successfully deployed. ✅

2. I like the fact that it is using istio sidecar, so mTLS can be set between communicating parties. ✅

3. I am wondering if mtls should be enforced though ⚠️

4. I was also able to clone the repo::white_check_mark:

kubectl port-forward --namespace git-server svc/git-server 9090:80
git clone http://127.0.0.1:9090/otomi/values.git

kubectl get secret git-server-credentials -n git-server -o jsonpath='{.data.password}'

5. After enabling gitea things get messy, so fine tuning needs to be done so the platform does not try to switch to gitea. ⚠️

[j-zimnowoda]

Once PoC is approved we will host it at docker.io/linode

[j-zimnowoda]

256Mi should be more than enough

[j-zimnowoda]

pls, make it independent from git.
The git-server is going to be default mode. It should be possible to switch it to Gitea but that falls into to BYO git procedure and should not differ from switching to Github or other 3rd party provider.