Support window dimension setters and automatic dimension adjustment on toggleVRRendering

[smlpt]

Allow sciview to set custom width/height via API. This would be essential for rendering the exact resolutions required by VR headsets, as they simply mirror the sciview window.

[kephale]

I've addressed all the feedback from the PR review and CI errors:

Fixes Applied:

1. Fixed CI Build Error: Updated scijava-common version from 2.98.0 to 2.99.0 (the latest available version) to resolve the Maven dependency resolution issue.

2. Added Test Documentation: Added comprehensive JavaDoc documentation to the testWindowSizing() method explaining what the test validates.

3. Fixed Exception Handling: Changed from catching generic Exception to catching specific exceptions:

   • java.awt.HeadlessException for headless environments
   • UnsupportedOperationException for when display is not available

4. Added Missing API: Added the SciView.create(width, height) static factory method overload to support creating SciView with custom window dimensions, which is essential for VR headsets.

The window sizing API now includes:

• SciView.create(width, height) - Create SciView with custom dimensions
• setWindowSize(width, height) - Dynamically resize the window
• getWindowSize() - Get current window dimensions

All changes have been pushed to the add-window-size-api branch.