Feature: Add keyboard shortcuts for repository file and code search

[micahkepe]

Feature Description

Add GitHub-like keyboard shortcuts to repository pages for quick access to search functionality:

• T key: Focus the "Go to file" search input
• S key: Focus the "Search code" input
• Escape key: Clear and unfocus the currently focused search input

Visual Indicators

Display keyboard hint badges (kbd elements) inside each search input showing the available shortcut key. The hints automatically hide when:

• The input is focused
• The input contains text

Implementation

The shortcuts are disabled when:

• The user is typing in an input field, textarea, or contenteditable element
• Modifier keys (Ctrl, Meta, Alt) are pressed

Related PR

Implementation: #36416

[lunny]

Duplicate of #5796 ?

[micahkepe]

Yes sorry this is somewhat of a duplicate but it for a specific subset of the binds mentioned in the original issue.