Added GNOME 50 support and improved window gesture behavior

[Jagathesh04]

Summary

This PR adds GNOME 50 compatibility and improves the window switching gesture behavior.

Changes

• Added GNOME 50 support.
• Added configurable 3-finger swipe up and 4-finger swipe up actions.
• Added a "Maximize Window" gesture action.
• Fixed window switcher state caching to allow consecutive swipe navigation without resetting to the initial window.
• Implemented continuous window switching during a single swipe gesture.
• Changed window switching from circular wrap-around to bounded navigation (stops at the first/last window).
• Removed visual flickering and bounce effects when the window switcher reaches a boundary.
• Increased window switcher icon size for improved visibility.

Tested

• GNOME Shell 50
• Multi-window switching using touchpad gestures
• Boundary behavior at the first and last windows
• Continuous gesture navigation