The raj71 v1.0

[TheRaj71]

This pull request to bot.py includes significant changes to enhance the functionality and user interaction of the cryptocurrency price bot. The most important changes include the introduction of conversation states, new API functions for fetching cryptocurrency data, and restructuring the command and callback query handlers.

Enhancements to functionality:

• Introduced conversation states MAIN_MENU, CHOOSING_CRYPTO, CHOOSING_CURRENCY, and TYPING_SEARCH to manage different stages of user interaction. (bot.py)
• Added new API functions get_top_cryptos, get_trending_cryptos, and get_crypto_details to fetch cryptocurrency data from the CoinGecko API. (bot.py)
• Implemented new command handlers start and help_command to provide a main menu and help message to users. (bot.py)

Restructuring and code improvements:

• Reorganized the bot's main function to use ConversationHandler for managing different states and user inputs. (bot.py)
• Replaced old command and message handlers with new ones to support the enhanced functionality and structured user interactions. (bot.py)

[github-actions]

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[Harish-2003]

Thank you for your contribution