chore: update ratatui to 0.29.0

[a-kenji]

This PR updates ratatui to version 0.29.0, the latest release.
I changed most recommended changes.
Not all of those are strictly neccessary (errors) but all of them are at least warnings that got addressed through the update.

• chore: Update ratatui
• refactor: Use Frame from root of the crate
• refactor: Remove deprecated Corner
• refactor: Use Margin directly instead of a reference
• refactor: Use autoresize
• refactor: Use area() instead of size()
• refactor: Convert size to area
• refactor: Use buffer directly
• refactor: Use set_cursor_position instead of set_cursor
• refactor: Use filled_style()

[kdheepak]

I super appreciate the PRs!