Resizing Panes with Mouse

[AVDAIN]

Description of the new feature

Description:

Currently, when opening a new pane in Windows Terminal using the keyboard shortcut Alt + Shift + D, resizing the pane requires using the arrow keys in conjunction with Alt + Shift.

This feature request proposes allowing users to resize the newly opened pane directly with their mouse.

Expected Behavior:

1. Initial Pane Opening:

   • User presses Alt + Shift + D to open a new pane.
   • A new pane is created with a default size.

2. Mouse-Based Resizing:

   • User hovers their mouse cursor over the edge of the newly opened pane.
   • Cursor changes to indicate resize mode (e.g., double-headed arrow).
   • User drags the mouse to resize the pane horizontally or vertically.
   • Pane size adjusts accordingly.

Benefits:

• Increased User-Friendliness: Provides a more intuitive and efficient way to resize panes, especially for users who prefer mouse-based interactions.
• Enhanced Accessibility: May be more accessible to users with certain motor impairments who may find keyboard-only resizing challenging.

Alternatives Considered:

• Configurable Default Pane Size: Allow users to define default pane sizes for different scenarios.
• Keyboard Shortcuts for Common Resizes: Implement dedicated keyboard shortcuts for common resize actions (e.g., maximize pane, resize to half-screen).

Proposed technical implementation details

No response