feat: add subscription and transaction repositories

- Implemented SubscriptionRepository with methods to get, create, and update subscriptions.
- Added BalanceTXRepository for creating and retrieving balance transactions.
- Introduced a test script for simulating Pally webhook for local testing.

bot/handlers/__init__.py

@@ -2,6 +2,7 @@ from .ads import router as ads_router
 from .billing import router as billing_router
 from .buy import router as buy_router
 from .common import router as common_router
+from .deposit import router as deposit_router
 from .menus import router as menus_router
 from .prehandling import router as prehandling_router
 from .referals import router as referal_router
@@ -11,6 +12,7 @@ routers = [
     prehandling_router,
     referal_router,
     billing_router,
+    deposit_router,
     menus_router,
     ads_router,
     support_router,