Add example Telegram bot settings

.env.example

@@ -26,3 +26,10 @@ CHUNK_SIZE_MB=50
 # Custom session secrets
 # By default, a random one is generated
 #SESSION_SECRET=SET-A-STRONG-RANDOM-VALUE
+
+# Optional Telegram bot for upload alerts and control
+# create a bot using @BotFather then copy the API key here
+# get your account's ID by messaging https://t.me/userinfobot
+# Leave these blank to disable
+TELEGRAM_BOT_API_KEY=
+TELEGRAM_BOT_OWNER_ID=