Add fish integration

[turn1a]

Summary

This pull request introduces several enhancements and fixes to the ShellGPT project, including improvements to the README.md documentation, and the addition of Fish shell integration.

Changes

README.md

• General Improvements: Enhanced readability and formatting throughout the document.
• Fish Shell Support: Updated documentation to reflect support for the Fish shell, including installation and usage instructions.
• Additional Examples: Added more examples to demonstrate the usage of ShellGPT in various scenarios.
• Clarifications: Provided additional clarifications and tips for better user experience.

Code Changes

sgpt/app.py

• Shell Integration: Updated the help message for the install_integration option to include Fish shell support.

sgpt/integration.py

• Fish Shell Integration: Added a new Fish shell integration script to enable ShellGPT completions directly in the Fish shell.

sgpt/utils.py

• Integration Logic: Updated the install_shell_integration function to support Fish shell, in addition to ZSH and Bash.

Installation and Usage

• Shell Integration: Users can now install shell integration for ZSH, Bash, and Fish shells using the sgpt --install-integration command.
• Hotkeys: Default hotkeys for invoking ShellGPT have been specified for each shell:
  • ZSH and Bash: Ctrl+l
  • Fish: Ctrl+/ (Ctrl+/ is already taken in fish)

Documentation

• Enhanced Examples: Provided detailed examples for using ShellGPT with various shell commands, code generation, and chat modes.
• Function Calling: Explained how to define and use custom functions with ShellGPT.
• Roles and Request Cache: Added sections on creating custom roles and controlling request cache.

Conclusion

These changes aim to improve the overall usability and functionality of ShellGPT, making it more versatile and user-friendly across different shell environments. The updated documentation ensures that users have clear and comprehensive guidance on how to leverage the full capabilities of ShellGPT.

[TheR1D]

@turn1a could you please resolve lint issues? Check the "Lint and Test" pipeline for details or run sh scripts/lint.sh.