This val is a demo skeleton of a telegram chat bot.
It requires the BOT_TOKEN environment varialbe, which the telegram bot token.
Another required variable is ME. The variable is an HTTP header to call a few extra endpoints (see the code).
One of those endpoints is /webhook/set, which installs the webhook to activate the bot.
The code is mostly educational. The bot echos back incoming messages.
There is one command, /ai, which sends the incoming messages to Open AI and forwards the reply back to the chat.
