feat(telegram): Let Telegram categorize when guessing expense + chang…

[contre95]

✨ Feature: Telegram Bot Categorization
Overview

This PR introduces the ability for the Telegram bot to categorize expenses, enhancing the bot’s functionality and improving the user experience when logging expenses via Telegram.
Key Changes

• Added logic to handle categorization of expenses through Telegram bot commands/interactions.
• Updated Telegram bot handlers to support new categorize feature.
• Modified backend/domain logic to associate categories with expenses coming from Telegram.
• Updated user prompts and messages to guide users in selecting or specifying categories.
• Added/updated tests to cover new categorize functionality.