Add gcp deployment script

.github/workflows/main.yml

@@ -0,0 +1,33 @@
+name: Deploy
+
+on:
+  push:
+    branches: ["master", "main", "staging"]
+
+jobs:
+  call-deployer:
+    runs-on: ubuntu-latest
+    steps:
+      - name: grindery-action-dispatcher token
+        id: grindery-action-dispatcher
+        uses: getsentry/action-github-app-token@v1
+        with:
+          app_id: ${{ secrets.DISPATCHER_APP_ID }}
+          private_key: ${{ secrets.DISPATCHER_APP_PRIVATE_KEY }}
+      - uses: actions/github-script@v6
+        env:
+          TARGET_REPO: ${{ secrets.DISPATCHER_TARGET_REPO }}
+        with:
+          github-token: ${{ steps.grindery-action-dispatcher.outputs.token }}
+          script: |
+            await github.rest.actions.createWorkflowDispatch({
+              owner: context.repo.owner,
+              repo: process.env.TARGET_REPO,
+              workflow_id: 'main.yml',
+              ref: 'main',
+              inputs: {
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                ref: process.env.GITHUB_REF_NAME,
+              },
+            });