Feat: Add python support to starship

[vihu]

Summary

Typically users have python with a .venv folder in the project they're working on.

This adds python support to the starship prompt.

Example:

 starship explain

 Here's a breakdown of your prompt:
 " " (<1ms)                        -  A character (usually an arrow) beside where the text is entered in your terminal
 " ~/personal/python-test " (<1ms)  -  The current working directory
 "🍭 " (31ms)                       -  The current operating system
 " .venv v3.11.3 " (1ms)           -  The currently installed version of Python
 " rahul " (<1ms)                    -  The active user's username

Screenshot with nightfox starship toml: