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-checkout-session.ts

@@ -1,17 +1,21 @@
 'use server';
 
+import type Stripe from 'stripe';
+
 import { stripe } from '@documenso/lib/server-only/stripe';
 
 export type GetCheckoutSessionOptions = {
   customerId: string;
   priceId: string;
   returnUrl: string;
+  subscriptionMetadata?: Stripe.Metadata;
 };
 
 export const getCheckoutSession = async ({
   customerId,
   priceId,
   returnUrl,
+  subscriptionMetadata,
 }: GetCheckoutSessionOptions) => {
   'use server';
 
@@ -26,6 +30,9 @@ export const getCheckoutSession = async ({
     ],
     success_url: `${returnUrl}?success=true`,
     cancel_url: `${returnUrl}?canceled=true`,
+    subscription_data: {
+      metadata: subscriptionMetadata,
+    },
   });
 
   return session.url;