feat: support render environment groups (#4327)

* feat: support env groups in render sync

* fix: update doc

* Update backend/src/services/app-connection/render/render-connection-service.ts

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

* fix: pr changes

* fix: lint and type check

* fix: changes

* fix: remove secrets

* fix: MAX iterations in render sync

* fix: render sync review fields

* fix: pr changes

* fix: lint

* fix: changes

---------

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

backend/src/lib/api-docs/constants.ts

@@ -2491,6 +2491,7 @@ export const SecretSyncs = {
     },
     RENDER: {
       serviceId: "The ID of the Render service to sync secrets to.",
+      environmentGroupId: "The ID of the Render environment group to sync secrets to.",
       scope: "The Render scope that secrets should be synced to.",
       type: "The Render resource type to sync secrets to."
     },