feat: add BillingCacheService with 1-hour TTL for team subscription data (#23934)

* feat: add BillingCacheService with 1-hour TTL for team subscription data

- Create BillingCacheService following CalendarsCacheService pattern
- Use teamId-based cache keys with 1-hour TTL (3,600,000 ms)
- Integrate caching into getBillingData method in BillingService
- Add cache invalidation to all webhook handlers:
  - handleStripeSubscriptionDeleted
  - handleStripePaymentSuccess
  - handleStripePaymentFailed
  - handleStripePaymentPastDue
  - handleStripeCheckoutEvents
- Add cache invalidation to cancelTeamSubscription method
- Add RedisModule import to billing module
- Add BillingCacheService to billing module providers
- Add findTeamByPlatformBillingId method to OrganizationsRepository for cache invalidation

Co-Authored-By: morgan@cal.com <morgan@cal.com>

* refactor: implement BillingServiceCachingProxy pattern

- Extract IBillingService interface with all public methods
- Create BillingServiceCachingProxy that implements caching logic
- Remove all caching logic from original BillingService
- Simplify cache invalidation using billing.id = team.id
- Update module to use proxy with proper dependency injection
- Update controller to inject proxy interface
- Remove unused BillingService import from controller

This follows the proxy pattern requested in PR feedback, separating
caching concerns from core billing logic for better maintainability.

Co-Authored-By: morgan@cal.com <morgan@cal.com>

* chore: add e2e for billing check

* chore: eslint rule for blocking importing features from appstore, lib, prisma (#23832)

* eslint rule

* improve

* fix

* improve msg

* chore: fix any types set by devin

* fix: add mising expect in test

* refactor: move cache methods into BillingServiceCachingProxy

- Remove BillingCacheService abstraction as suggested by @keithwillcode
- Move cache methods directly into proxy as private methods
- Update proxy to inject RedisService directly
- Move BillingData type to interface for better type safety
- Remove BillingCacheService from module providers
- Delete unused billing-cache.service.ts file

This simplifies the architecture by removing unnecessary abstraction
and follows standard caching proxy patterns.

Co-Authored-By: morgan@cal.com <morgan@cal.com>

* fix: test and legacy starter

---------

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Co-authored-by: morgan@cal.com <morgan@cal.com>
Co-authored-by: Benny Joo <sldisek783@gmail.com>
Co-authored-by: Morgan <33722304+ThyMinimalDev@users.noreply.github.com>

apps/api/v2/src/modules/organizations/index/organizations.repository.ts

@@ -174,4 +174,14 @@ export class OrganizationsRepository {
       },
     });
   }
+
+  async findTeamByPlatformBillingId(billingId: number) {
+    return this.dbRead.prisma.team.findFirst({
+      where: {
+        platformBilling: {
+          id: billingId,
+        },
+      },
+    });
+  }
 }