feat: add teams (#848)

## Description

Add support for teams which will allow users to collaborate on
documents.

Teams features allows users to:

- Create, manage and transfer teams
- Manage team members
- Manage team emails
- Manage a shared team inbox and documents

These changes do NOT include the following, which are planned for a
future release:

- Team templates
- Team API
- Search menu integration

## Testing Performed

- Added E2E tests for general team management
- Added E2E tests to validate document counts

## Checklist

- [X] I have tested these changes locally and they work as expected.
- [X] I have added/updated tests that prove the effectiveness of these
changes.
- [ ] I have updated the documentation to reflect these changes, if
applicable.
- [X] I have followed the project's coding style guidelines.

packages/lib/utils/billing.ts

@@ -0,0 +1,16 @@
+import type { Subscription } from '.prisma/client';
+import { SubscriptionStatus } from '.prisma/client';
+
+/**
+ * Returns true if there is a subscription that is active and is a community plan.
+ */
+export const subscriptionsContainsActiveCommunityPlan = (
+  subscriptions: Subscription[],
+  communityPlanPriceIds: string[],
+) => {
+  return subscriptions.some(
+    (subscription) =>
+      subscription.status === SubscriptionStatus.ACTIVE &&
+      communityPlanPriceIds.includes(subscription.priceId),
+  );
+};