Bump version to 0.7.1 and improve 'sidekick' feature warnings 🚀
This commit includes two main changes:
1. The version of the `aicodebot` package has been bumped from 0.7.0 to 0.7.1.
2. The 'sidekick' feature in `cli.py` has been updated with more explicit warning messages. These messages inform the user that the feature is experimental and may not perform optimally. Additionally, the command description has been slightly modified for clarity. Two new styles for console output, `error_style` and `warning_style`, have been added to enhance these messages visually.
