Add Configuration File for User Settings

[vamsi-op]

Description

Currently, users need to hardcode their API key directly in \jarvis.py\ and can't save their preferred settings. Create a configuration system using a config.json or .env file.

Benefits

• Keep API keys secure (not in source code)
• Save user preferences (wake word mode, voice settings, default browser)
• Make it easier for contributors to set up
• Add .env to .gitignore for security

Implementation Ideas

• Use python-dotenv for environment variables
• Create a config.example.json template
• Load settings on startup
• Store: API key, voice speed/volume, preferred browser, wake word sensitivity

Suggested Files to Create

• .env.example - Template for environment variables
• config.py - Configuration loader module
• Update .gitignore to exclude .env `n

Priority

High - This improves security and user experience