feat(cloud): enable seat based pricing (#161)

* feat: setup subscriptions

* feat: prompt user to create subscription if inactive

* feat: update subscription when increasing/decreasing workspace members

* feat: rework upgrade

* chore: remove pricing notice

* chore: add translations

* chore: update proration comment

packages/db/src/schema/index.ts

@@ -10,3 +10,4 @@ export * from "./lists";
 export * from "./users";
 export * from "./integrations";
 export * from "./workspaces";
+export * from "./subscriptions";