add sync customer command and drop subscription customer constraint (#9131)

**TLDR:**
Solves (https://github.com/twentyhq/private-issues/issues/212)
Add command to sync customer data from stripe to BillingCustomerTable
for all active workspaces. Drop foreign key contraint on billingCustomer
in BillingSubscription (in order to not break the DB).

**In order to test:**

- Billing should be enabled
- Have some workspaces that are active and whose id's are not mentioned
in BillingCustomer (but the customer are present in stripe).

Run the command: 
`npx nx run twenty-server:command billing:sync-customer-data`

Take into consideration
Due that all the previous subscriptions in Stripe have the workspaceId
in their metadata, we use that information as source of true for the
data sync

**Things to do:**

- Add tests for Billing utils
- Separate StripeService into multipleServices
(stripeSubscriptionService, stripePriceService etc) perhaps add them in
(https://github.com/twentyhq/private-issues/issues/201)?

packages/twenty-server/src/database/typeorm/core/migrations/billing/1734450749954-addConstraintsOnBillingTables.ts

@@ -30,15 +30,9 @@ export class AddConstraintsOnBillingTables1734450749954
     await queryRunner.query(
       `ALTER TABLE "core"."billingEntitlement" ADD CONSTRAINT "FK_766a1918aa3dbe0d67d3df62356" FOREIGN KEY ("stripeCustomerId") REFERENCES "core"."billingCustomer"("stripeCustomerId") ON DELETE CASCADE ON UPDATE NO ACTION`,
     );
-    await queryRunner.query(
-      `ALTER TABLE "core"."billingSubscription" ADD CONSTRAINT "FK_9120b7586c3471463480b58d20a" FOREIGN KEY ("stripeCustomerId") REFERENCES "core"."billingCustomer"("stripeCustomerId") ON DELETE CASCADE ON UPDATE NO ACTION`,
-    );
   }
 
   public async down(queryRunner: QueryRunner): Promise<void> {
-    await queryRunner.query(
-      `ALTER TABLE "core"."billingSubscription" DROP CONSTRAINT "FK_9120b7586c3471463480b58d20a"`,
-    );
     await queryRunner.query(
       `ALTER TABLE "core"."billingEntitlement" DROP CONSTRAINT "FK_766a1918aa3dbe0d67d3df62356"`,
     );