feat: stripe plugin to handle subscriptions and customers (#1588)

* init

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* feat(stripe): enable subscription support and update pricing plans

* feat(stripe): add Vitest configuration and initial tests for Stripe integration

* feat(stripe): implement setCookieToHeader function and update tests for customer creation and subscription handling

* feat(stripe): add seats support for subscriptions and update related endpoints

* feat(stripe): update schema to include unique referenceId, stripeSubscriptionId, and periodEnd fields

* wip docs

* docs

* docs: imporves

* fix(stripe): update webhook handlers to use correct subscription identification

* refactor(stripe): simplify customer management by storing Stripe customer ID directly on user

* chore(stripe): update package configuration and build setup

- Migrated from tsup to unbuild for build configuration
- Updated package.json with improved export and dependency management
- Added build configuration for better module support
- Removed tsup configuration file

* chore(stripe): update pnpm lockfile dependencies

- Moved `better-auth` from devDependencies to dependencies
- Added `zod` as a direct dependency
- Reorganized package dependencies in the lockfile

* feat(stripe): enhance subscription management and error handling

- Added toast error handling for subscription upgrades in the dashboard
- Updated Stripe price IDs for different plans
- Improved Stripe plugin documentation with beta warning and team subscription details
- Implemented intermediate redirect for checkout success to handle race conditions
- Added support for fetching and updating subscription status after checkout
- Fixed Next.js cookie handling and build configuration

* chore: update snapshot

demo/nextjs/lib/auth-client.ts

@@ -10,6 +10,7 @@ import {
 	genericOAuthClient,
 } from "better-auth/client/plugins";
 import { toast } from "sonner";
+import { stripeClient } from "@better-auth/stripe/client";
 
 export const client = createAuthClient({
 	plugins: [
@@ -30,6 +31,9 @@ export const client = createAuthClient({
 		}),
 		oidcClient(),
 		genericOAuthClient(),
+		stripeClient({
+			subscription: true,
+		}),
 	],
 	fetchOptions: {
 		onError(e) {