fix: add missing gh action

.github/actions/setup-gcloud/action.yml

@@ -0,0 +1,33 @@
+name: Setup gcloud
+description: Setup gcloud with authentication
+author: '[email protected]'
+
+inputs:
+  workload_identity_provider:
+    description: "The workload identity provider for the github actions deployer. Created when running the 'Set up an Environemnt' step."
+    required: true
+  service_account:
+    description: "The service account email of the github actions deployer. Created when running the 'Set up an Environemnt' step."
+    required: true
+  project_id:
+    description: 'The google project id for setting up gcloud authentication'
+    required: true
+
+runs:
+  using: composite
+  steps:
+    # This uses Google Identity Federation to do password-less login. This is setup using terraform (deployment/create_environment/github_actions_deployer.tf)
+    - id: auth
+      uses: google-github-actions/auth@v0
+      with:
+        workload_identity_provider: ${{ inputs.workload_identity_provider }}
+        service_account: ${{ inputs.service_account }}
+
+    - name: Set up Cloud SDK
+      uses: google-github-actions/setup-gcloud@v0
+      with:
+        project_id: ${{ inputs.project_id }}
+
+branding:
+  icon: scissors
+  color: purple