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/ee/server-only/stripe/get-community-plan-prices.ts

@@ -0,0 +1,13 @@
+import { STRIPE_PLAN_TYPE } from '@documenso/lib/constants/billing';
+
+import { getPricesByPlan } from './get-prices-by-plan';
+
+export const getCommunityPlanPrices = async () => {
+  return await getPricesByPlan(STRIPE_PLAN_TYPE.COMMUNITY);
+};
+
+export const getCommunityPlanPriceIds = async () => {
+  const prices = await getCommunityPlanPrices();
+
+  return prices.map((price) => price.id);
+};