Registry API Refactoring (#144)

* Refactor core to use a flexible registry pattern

- Introduce a new registry mechanism for mailer providers
- Extract mailer provider enum to a separate file
- Implement dynamic mailer loading using a registry
- Update package dependencies and exports
- Improve modularity and extensibility of mailer implementation

* Refactor monitoring and billing services to use a flexible registry pattern

- Introduce a shared registry mechanism for dynamic service loading
- Replace static switch-based implementations with a registry-based approach
- Update instrumentation, CMS, and monitoring services to use the new registry
- Improve modularity and extensibility of service implementations
- Add Zod-based type-safe provider validation

* Simplify async registration in monitoring and billing services

- Remove unnecessary async wrappers for no-op registrations
- Update type definitions to support both async and sync registration functions
- Standardize registration approach for Paddle and Sentry providers

* Remove Tailwind package from packages where it is not being needed

* Remove Tailwind config references from pnpm-lock.yaml

* Update instrumentation registry to support dynamic monitoring providers

- Modify type definition to use NonNullable MonitoringProvider
- Import MonitoringProvider type from get-monitoring-provider
- Enhance type safety for instrumentation registration

packages/billing/gateway/src/server/services/billing-gateway/billing-gateway.service.ts

@@ -11,7 +11,7 @@ import {
   UpdateSubscriptionParamsSchema,
 } from '@kit/billing/schema';
 
-import { BillingGatewayFactoryService } from './billing-gateway-factory.service';
+import { billingStrategyRegistry } from './billing-gateway-registry';
 
 export function createBillingGatewayService(
   provider: z.infer<typeof BillingProviderSchema>,
@@ -138,6 +138,6 @@ class BillingGatewayService {
   }
 
   private getStrategy() {
-    return BillingGatewayFactoryService.GetProviderStrategy(this.provider);
+    return billingStrategyRegistry.get(this.provider);
   }
 }