feat: Add Telegram bot with group support

- Full Telegram bot implementation for Lightning Jackpot
- Commands: /start, /buy, /tickets, /wins, /address, /jackpot, /help
- Lightning invoice generation with QR codes
- Payment polling and confirmation notifications
- User state management (Redis/in-memory fallback)
- Group support with admin settings panel
- Configurable draw announcements and reminders
- Centralized messages for easy i18n
- Docker configuration included

telegram_bot/src/handlers/index.ts

@@ -0,0 +1,33 @@
+export { handleStart } from './start';
+export {
+  handleAddressCommand,
+  handleLightningAddressInput,
+} from './address';
+export {
+  handleBuyCommand,
+  handleTicketAmountSelection,
+  handleCustomTicketAmount,
+  handlePurchaseConfirmation,
+} from './buy';
+export {
+  handleTicketsCommand,
+  handleViewTicket,
+  handleStatusCheck,
+} from './tickets';
+export { handleWinsCommand } from './wins';
+export { handleHelpCommand } from './help';
+export {
+  handleMenuCommand,
+  handleCancel,
+  handleMenuCallback,
+} from './menu';
+export {
+  handleBotAddedToGroup,
+  handleBotRemovedFromGroup,
+  handleGroupSettings,
+  handleGroupSettingsCallback,
+  handleGroupRefresh,
+  broadcastDrawAnnouncement,
+  broadcastDrawReminder,
+} from './groups';
+