ci: add release-please support (#22)

.github/workflows/release-please.yml

@@ -0,0 +1,17 @@
+# This isn't meant for usage in consuming repos. It's for releasing this repo's actions/workflows itself.
+
+name: Release Please
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+
+jobs:
+  release-please:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: google-github-actions/release-please-action@v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          target-branch: ${{ github.ref_name }}

.release-please-manifest.json

@@ -0,0 +1,8 @@
+{
+  "actions/contract-tests": "1.0.1",
+  "actions/publish-pages": "1.0.2",
+  "actions/release-secrets": "1.1.0",
+  "actions/sign-dlls": "1.0.0",
+  "actions/verify-hello-app": "1.0.1",
+  ".github/workflows": "1.0.0"
+}

release-please-config.json

@@ -0,0 +1,31 @@
+{
+  "separate-pull-requests": true,
+  "include-component-in-tag": true,
+  "include-v-in-tag": true,
+  "packages": {
+    "actions/contract-tests": {
+      "release-type": "simple",
+      "package-name": "contract-tests"
+    },
+    "actions/publish-pages": {
+      "release-type": "simple",
+      "package-name": "publish-pages"
+    },
+    "actions/release-secrets": {
+      "release-type": "simple",
+      "package-name": "release-secrets"
+    },
+    "actions/sign-dlls": {
+      "release-type": "simple",
+      "package-name": "sign-dlls"
+    },
+    "actions/verify-hello-app": {
+      "release-type": "simple",
+      "package-name": "verify-hello-app"
+    },
+    ".github/workflows": {
+      "release-type": "simple",
+      "package-name": "workflows"
+    }
+  }
+}