Pull Request Overview

This PR adds comprehensive documentation for the Flight class to RocketPy's user guide. The documentation provides detailed guidance on creating flight simulations, understanding parameters, accessing results, and utilizing advanced features.

Key changes:

• Added a new Flight class usage documentation page covering simulation creation, parameters, results access, plotting, and advanced features
• Updated the main user guide index to include the new Flight documentation

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

File	Description
docs/user/index.rst	Added Flight documentation entry to the user guide table of contents
docs/user/flight.rst	New comprehensive Flight class documentation with examples, parameter explanations, and usage patterns