Enhance payment processing and rental features

- Updated the BTCPay service to support internal Lightning invoices with private route hints, improving payment routing for users with private channels.
- Added reconciliation methods for pending rents and subscriptions to ensure missed payments are processed on startup.
- Enhanced the rental and subscription services to handle payments in satoshis, aligning with Lightning Network standards.
- Improved the rental modal and content detail components to display rental status and pricing more clearly, including a countdown for rental expiration.
- Refactored various components to streamline user experience and ensure accurate rental access checks.

backend/src/discounts/entities/discount.entity.ts

@@ -49,7 +49,7 @@ export class Discount {
 
   @Column({
     type: 'decimal',
-    precision: 5,
+    precision: 15,
     scale: 2,
     nullable: false,
     transformer: {