feat(ui): add rich terminal UI for output formatting

[latiefdole]

Description

This PR introduces a modern, hacker-friendly Terminal User Interface (TUI) for Kaggle CLI using the rich library, making tables and outputs much more readable and user-friendly.

Changes Made

• Added ui.py which handles rendering of gorgeous tables with rounded borders and responsive column alignments.
• Intercepted the print_table logic inside kaggle_api_extended.py to route formatted data through rich if it is supported by the terminal.
• Maintained perfect backward compatibility: if the output is piped or rich fails, it defaults completely to the original raw text/csv outputs.
• Added test_ui.py with mock tests.
• Updated pyproject.toml dependencies to include rich.

This fulfills the requirements mentioned in CONTRIBUTING.md.

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[latiefdole]

@googlebot I signed it!

[stevemessick]

/gcbrun