chore: Add release workflow (#16)

This sets up the release-please action in the github workflow which will
run after every new commit on master. It will create a new PR on master
that when merged will cut a new release with generated changelog.

Commit titles on master must follow conventional commit convention for
correct changelog generation.

.github/workflows/release.yml

@@ -0,0 +1,20 @@
+name: release
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - master
+
+# Cancels an release workflows in progress
+concurrency:
+  group: ${{ github.workflow }}
+  cancel-in-progress: true
+
+jobs:
+  release:
+    permissions:
+      contents: write
+      pull-requests: write
+    uses: looker-open-source/reusable-actions/.github/workflows/marketplace-block-release.yml@main
+    secrets: inherit