feat: Implement payment notification system and API structure

- Added notifications for successful payments in `api/core/notifications.py`.
- Created main API entry point in `api/main.py` with FastAPI integration.
- Established routing structure in `api/routes/__init__.py` and `api/routes/pally.py` for handling payment callbacks.
- Developed billing handlers in `bot/handlers/billing.py` and `bot/handlers/buy.py` for subscription management.
- Introduced state management for user interactions in `bot/states/`.
- Created user interface elements in `bot/keyboards/` for navigation and payment processing.
- Set up middleware for dependency injection in `bot/middlewares/di.py`.
- Added support for user commands and interactions in `bot/handlers/common.py` and `bot/handlers/support.py`.
- Implemented logging and error handling throughout the bot's functionality.
- Created entry point script for API server in `entrypoints/api.sh`.

config.py

@@ -6,19 +6,23 @@ load_dotenv(override=True)
 
 
 class Settings(BaseSettings):
-    bot_token: str = Field(alias="BOT_TOKEN")
     postgres_url: str = Field(
         "postgresql+asyncpg://malenia:skibidi@localhost:5432/malenia_db", alias="POSTGRES_URL"
     )
+
+    bot_token: str = Field(alias="BOT_TOKEN")
+
+    pally_shop_id: str = Field(alias="PALLY_SHOP_ID")
+    pally_token: str = Field(alias="PALLY_TOKEN")
+
+    referal_bonus: int = Field(10, alias="REFERAL_BONUS")
+
     proxy: str | None = Field(None, alias="PROXY")
 
     remnawave_url: str = Field(alias="REMNAWAVE_URL")
     subscription_url: str = Field(alias="SUBSCRIPTION_URL")
     remnawave_token: str = Field(alias="REMNAWAVE_TOKEN")
 
-    pally_shop_id: str = Field(alias="PALLY_SHOP_ID")
-    pally_token: str = Field(alias="PALLY_TOKEN")
-
     min_devices: int = Field(3, alias="MIN_DEVICES")
     max_devices: int = Field(12, alias="MAX_DEVICES")
     per_device_cost: int = Field(50, alias="PER_DEVICE_COST")