add SLASH_START

Author: odilitime

src/types.ts

@@ -31,6 +31,9 @@ export enum TelegramEventTypes {
   WORLD_CONNECTED = 'TELEGRAM_WORLD_CONNECTED',
   WORLD_LEFT = 'TELEGRAM_WORLD_LEFT',
 
+  // /start event
+  SLASH_START = 'TELEGRAM_SLASH_START',
+
   // Entity events
   ENTITY_JOINED = 'TELEGRAM_ENTITY_JOINED',
   ENTITY_LEFT = 'TELEGRAM_ENTITY_LEFT',