Add N&N for resource-efficient and size-consistent Windows image drawing

[HeikoKlare]

See

• [Win32] Avoid redundant handle creation in GC.drawImage() by tracking effective zoom eclipse.platform.swt#3429
• [Win32] Improve size calculation for cropped and scaled image drawing eclipse.platform.swt#3431
• [Win32] Extend GC.drawImage() handle selection with exact-zoom and monitor-zoom logic eclipse.platform.swt#3459
• [Win32] Fix drawImage() failing for an empty image eclipse.platform.swt#3463

[Copilot]

Pull request overview

Adds a New & Noteworthy entry to the Eclipse Platform website content describing recent SWT improvements to Windows image drawing performance and consistency across GC.drawImage() overloads.

Changes:

• Document Windows performance improvements for repeatedly scaled image drawing.
• Document a fix for size consistency between GC.drawImage() overloads on non-100% zoom monitors.

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