chore: setup declarative configuration for branch protection and release-please

.github/release-please.yml

@@ -4,3 +4,12 @@ handleGHRelease: true
 primaryBranch: main
 manifest: true
 extraFiles: ["WORKSPACE", ".cloudbuild/graalvm/cloudbuild.yaml", ".cloudbuild/graalvm/cloudbuild-test-a.yaml", ".cloudbuild/graalvm/cloudbuild-test-b.yaml", ".cloudbuild/library_generation/cloudbuild-library-generation-release.yaml", "generation_config.yaml"]
+branches:
+  - branch: 2.23.x
+    releaseType: java-backport
+    manifest: true
+    handleGHRelease: true
+  - branch: 2.40.x
+    releaseType: java-backport
+    manifest: true
+    handleGHRelease: true

.github/sync-repo-settings.yaml

@@ -1,3 +1,75 @@
 rebaseMergeAllowed: true
 squashMergeAllowed: true
 mergeCommitAllowed: false
+branchProtectionRules:
+  - pattern: main
+    isAdminEnforced: true
+    requiredApprovingReviewCount: 1
+    requiresCodeOwnerReviews: true
+    requiresStrictStatusChecks: false
+    requiredStatusCheckContexts:
+      - build (8) except for gapic-generator-java
+      - build (8) for gapic-generator-java
+      - build (11)
+      - build (17)
+      - build(21) except self-service clients
+      - showcase (11)
+      - showcase (17)
+      - showcase (21)
+      - showcase-native
+      - compatibility
+      - cla/google
+      - lint
+      - graalvm-presubmit-sdk-platform-java-a (cloud-devrel-kokoro-resources)
+      - graalvm-presubmit-sdk-platform-java-b (cloud-devrel-kokoro-resources)
+      - library-generation-integration-tests
+      - library-generation-lint-shell
+      - library-generation-lint-python
+      - should-run-library-generation-tests
+  - pattern: 2.23.x
+    isAdminEnforced: true
+    requiredApprovingReviewCount: 1
+    requiresCodeOwnerReviews: true
+    requiresStrictStatusChecks: false
+    requiredStatusCheckContexts:
+      - build (8) except for gapic-generator-java
+      - build (8) for gapic-generator-java
+      - build (11)
+      - build (17)
+      - showcase (11)
+      - showcase (17)
+      - compatibility
+      - cla/google
+      - lint
+      - graalvm-presubmit-sdk-platform-java-a (cloud-devrel-kokoro-resources)
+      - graalvm-presubmit-sdk-platform-java-b (cloud-devrel-kokoro-resources)
+      - library-generation-integration-tests
+      - library-generation-lint-shell
+      - library-generation-lint-python
+      - should-run-library-generation-tests
+  - pattern: 2.40.x
+    isAdminEnforced: true
+    requiredApprovingReviewCount: 1
+    requiresCodeOwnerReviews: true
+    requiresStrictStatusChecks: false
+    requiredStatusCheckContexts:
+      - build (8) except for gapic-generator-java
+      - build (8) for gapic-generator-java
+      - build (11)
+      - build (17)
+      - build(21) except self-service clients
+      - showcase (11)
+      - showcase (17)
+      - showcase-native
+      - compatibility
+      - cla/google
+      - lint
+      - graalvm-presubmit-sdk-platform-java-a (cloud-devrel-kokoro-resources)
+      - graalvm-presubmit-sdk-platform-java-b (cloud-devrel-kokoro-resources)
+      - library-generation-integration-tests
+      - library-generation-lint-shell
+      - library-generation-lint-python
+      - should-run-library-generation-tests
+permissionRules:
+  - team: cloud-java-team-teamsync
+    permission: admin