chore: add connection metadata for adding project_roles automatically (#147)

Author: q2w

modules/simple-sa/metadata.yaml

@@ -62,6 +62,37 @@ spec:
         description: Roles to grant the SA in specified project
         varType: list(string)
         required: true
+        connections:
+          - source:
+              source: github.com/GoogleCloudPlatform/terraform-google-secret-manager//modules/simple-secret
+              version: ">= 0.5.1"
+            spec:
+              outputExpr: "[\"roles/secretmanager.secretAccessor\"]"
+          - source:
+              source: github.com/terraform-google-modules/terraform-google-sql-db//modules/postgresql
+              version: ">= 23.0"
+            spec:
+              outputExpr: "[\"roles/cloudsql.instanceUser\", \"roles/cloudsql.client\"]"
+          - source:
+              source: github.com/terraform-google-modules/terraform-google-sql-db//modules/mysql
+              version: ">= 23.0"
+            spec:
+              outputExpr: "[\"roles/cloudsql.instanceUser\", \"roles/cloudsql.client\"]"
+          - source:
+              source: github.com/terraform-google-modules/terraform-google-memorystore
+              version: ">= 12.0"
+            spec:
+              outputExpr: "[\"roles/redis.editor\"]"
+          - source:
+              source: github.com/GoogleCloudPlatform/terraform-google-cloud-run//modules/v2
+              version: ">= 0.13"
+            spec:
+              outputExpr: "[\"roles/run.invoker\"]"
+          - source:
+              source: github.com/terraform-google-modules/terraform-google-project-factory//modules/project_services
+              version: ">= 17.1.0"
+            spec:
+              outputExpr: "[\"roles/aiplatform.user\"]"
     outputs:
       - name: account_details
         description: Service account id and email