feat: Window resizing support

[dklassic]

Currently due to the defaulting decoration-less behavior of verso, we lack several window features including the ability for users to resize the window dynamically on Windows and Linux (macOS works fine). Adding window resizing support will improve user interaction, allowing users to adjust the browser window size to their preference by dragging the window edges or corners.

Expected Behavior:

• Users should be able to resize the window by clicking and dragging the edges or corners.
• The window size should adjust smoothly to match the mouse movements.
• Resizing should function properly on all supported operating systems (Windows and Linux).
• Supports both horizontal and vertical resizing, as well as corner-based diagonal resizing.

Technical Approach:

• Enable resizing functionality through native window APIs.
• Monitor mouse events (mousedown, mousemove, and mouseup) around the edges and corners to trigger resizing.

Acceptance Criteria:

• Users can resize the window by dragging its edges or corners.
• Resizing behaves consistently across different operating systems.
• Display corresponding cursor icon when on edges or corners.

Good To Haves:

• To ensure resizing actions are smooth and responsive to user input.
• To ensure that minimum and maximum window size constraints are respected during resizing.
• To ensure compatibility with other UI elements, such as buttons and menus, to prevent unintended resizing interactions.
• Resizing may cause flickering to the window itself which should be addressed in the future

[pewsheen]

Add double click on panel to toggle maximize window (still in progress, will keep update here)

versotile-org/verso-panel#8

[wusyong]

Although macOS works fine by default in resize.
We should make sure the behaviour is still the same after our implementation.
I tried to test it after the commit of resizing PR and it seems to still work fine on msOS:

Screen.Recording.2024-10-27.at.7.28.38.PM.mov

[wusyong]

Here's windows' resizing. Note that the black background is due to opengl from my device. Wgl can display transparent background.
Perhaps we could make the gl more configurable in the future.

windows-resize.mp4

[pewsheen]

Linux:

wayland_resize.mp4

[wusyong]

I'm working on smooth resizing for weeks. And here are some solid result on Linux. I'll send the PR once I make sure all platforms are smooth.

Screencast.from.2024.11.05.20.45.20.webm

[wusyong]

And here's macOS:

Screen.Recording.2024-11-05.at.8.39.58.PM.mov