ci: add reusable release-please workflow

- workflow_call entry point wrapping googleapis/release-please-action@45996ed (v5.0.0)
- SHA-pinned, job-level permissions (contents/pull-requests/issues: write)
- optional release-type input (default simple), no target-branch input so callers' own default branch auto-detects

Author: Aitomates

.github/workflows/release-please-reusable.yml

@@ -0,0 +1,22 @@
+name: Release Please (reusable)
+on:
+  workflow_call:
+    inputs:
+      release-type:
+        description: "release-please release-type strategy"
+        type: string
+        default: simple
+jobs:
+  release-please:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    permissions:
+      contents: write
+      pull-requests: write
+      issues: write
+    steps:
+      - uses: googleapis/release-please-action@45996ed1f6d02564a971a2fa1b5860e934307cf7 # v5.0.0
+        with:
+          release-type: ${{ inputs.release-type }}
+          config-file: release-please-config.json
+          manifest-file: .release-please-manifest.json