I've refactored the application to support local execution with a SQL…

[1caiji23]

…ite database. I also removed the Telegram integration, replacing it with a database-based notification system, and switched the LLM provider to Moonshot.

Here are the main changes:

• Database: The database backend has been updated to support both PostgreSQL and SQLite. The default configuration is now set to use a local SQLite database.
• Configuration: The configuration has been simplified and adapted for local execution. The config.yml file is now used to store local settings, including the LLM API key.
• LLM: The LLM service has been updated to use the Moonshot API, with the model and API key configurable in config.yml.
• Telegram Removal: The Telegram notification service has been completely removed and replaced with a DatabaseNotificationService that writes notifications to a new notifications table in the database.
• Manual Bounty Input: The Immunefi indexer has been modified to read bounty information from a local bounties.json file, allowing for manual input.
• Error Handling: The application has been made more resilient to missing block explorer API keys and other environment-specific issues.
• Dependencies: The requirements.txt file has been updated to remove PostgreSQL and Telegram-specific dependencies and add aiosqlite.

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[muellerberndt]

Hey thanks for the PR! Those are some big changes packed into a single PR. Would you mind splitting those changes up into 7 separate PRs, one for each feature? Then I'll review them one-by-one.

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