feat(apigateay): add OIDC and basic auth support

- when setting an OIDC issuer URL the defaulter will fetch and set
  authorization and token endpoints
- basic auth allows to use either inline hashed credentials or plaintext
  credentials from a secret that are automatically hashed
- finish TLS support for API & dashboard listeners

.github/workflows/lint.yml

@@ -28,4 +28,4 @@ jobs:
       - name: Run linter
         uses: golangci/golangci-lint-action@v6
         with:
-          version: v1.61
+          version: v1.63.4