feat: setup release please

Author: mateuszjasiuk

.github/workflows/release.yml

@@ -0,0 +1,22 @@
+on:
+  push:
+    branches:
+      - release-please-test
+
+permissions:
+  contents: write
+  pull-requests: write
+
+name: release-please
+jobs:
+  release-please:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: googleapis/release-please-action@v4
+      with:
+        release-type: rust
+        package-name: namada-indexer
+        token: ${{ secrets.GITHUB_TOKEN }}
+        monorepo-tags: true
+        command: manifest
+

.release-please-manifest.json

@@ -0,0 +1,3 @@
+{
+  ".": "2.4.4"
+}

release-please-config.json

@@ -0,0 +1,9 @@
+{
+  "packages": {
+    ".": {
+      "release-type": "rust",
+      "package-name": "namada-indexer"
+    }
+  },
+  "plugins": ["cargo-workspace"]
+}