add: telegram bot setup with grammy lib

[MaheshtheDev]

Summary

This pull request adds configuration and implementation for setting up a Telegram bot using the 'grammy' library.

Details

• Introduces import statements for the 'Bot' and 'webhookCallback' from the 'grammy' library.
• Defines 'runtime' as 'edge'.
• Retrieves the Telegram bot token from the environment variable 'TELEGRAM_BOT_TOKEN'.
• Initializes a new bot instance using the retrieved token.
• Defines a command 'start' to handle the start command and greet the user.
• Adds a message handler to respond to any message with a default reply.
• Exports the 'POST' method as a webhook callback for the bot.

New Features

• Integration of 'grammy' library for creating a Telegram bot.
• Implementation of start command handling to greet users.

Refactoring Details

• No specific refactoring mentioned in the diff.

✨ Generated with love by Kaizen ❤️

Original Description

None

[kaizen-bot]

Code Review

✅ All Clear: This PR is ready to merge! 👍

✨ Generated with love by Kaizen ❤️

[Dhravya]

Alright, this is pretty nice. need to add authentication. do you know a way? i can try figuring it out

[Dhravya]

Closing in favor of #80