Update UI style and enhance billing services

Several changes have been made in this commit. Firstly, updates have been made to the site-header-account-section and the pricing-table components to enhance UI aesthetics. Secondly, billing services have been significantly improved. A new method for retrieving plan information by an ID has been introduced. This method is available for all strategy services, including Stripe and Lemon-Squeezy. Furthermore, the way context and logging are handled during the billing process has been streamlined for better readability and efficiency.

packages/billing/core/src/services/billing-strategy-provider.service.ts

@@ -51,4 +51,11 @@ export abstract class BillingStrategyProviderService {
   ): Promise<{
     success: boolean;
   }>;
+
+  abstract getPlanById(planId: string): Promise<{
+    id: string;
+    name: string;
+    interval: string;
+    amount: number;
+  }>;
 }