Enhance Kitty Tab Bar Appearance and Add "New Tab in Current Directory" Shortcut and Add commented guides to minimize latency in kitty

[prime-run]

feat: add Kitty tab bar styling and add new tab shortcut

Pull Request

Description

Summary of Changes:

This pull request refines the Kitty terminal's appearance with minimal tab bar styling and introduces a more intuitive keyboard shortcut (Ctrl+Shift+T) for opening a new tab in the current working directory.

Motivation and Context:

The default Kitty tab bar appearance was considered less visually appealing. This change implements a minimal styling to improve its aesthetics by placing it at the bottom, using a powerline style with slanted separators, and displaying the number of windows when relevant.

Additionally, a new keyboard shortcut (Ctrl+Shift+T) has been added to open a new tab within the current working directory. This provides a more direct and commonly expected behavior for users who frequently need to open new tabs in the same location. While the default $mod+t shortcut remains available for opening a new tab with the default behavior, Ctrl+Shift+T offers a more relatable alternative for this specific use case.

The commented-out lines related to performance optimization are taken directly from the official Kitty documentation (https://sw.kovidgoyal.net/kitty/performance/) and were included for potential future experimentation with latency reduction. They are not active in this commit.

Dependencies:

No new dependencies are introduced by this change.

Type of change

Please put an x in the boxes that apply:

• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Bug fix (non-breaking change which fixes an issue)
• Documentation update (non-breaking change; modified files are limited to the documentations)
• Technical debt (a code change that does not fix a bug or add a feature but makes something clearer for devs)
• Other (provide details below)

Checklist

Please put an x in the boxes that apply:

• I have read the CONTRIBUTING document.
• My code follows the code style of this project.
• My commit message follows the commit guidelines.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added a changelog entry.
• I have added necessary comments/documentation to my code.
• I have added tests to cover my changes.
• I have tested my code locally and it works as expected.
• All new and existing tests passed.

Screenshots

Additional context

In some kitty colorschemes (themes) the default tab bar title was unreadable, this PR also fixes it

[prime-run]

edited and rebased