fix!: explicitly mark `_KGDTENTRY64` and `_KIDTENTRY64` as opaque types in `bindgen` #584

Job	Run time
Analyze (Microsoft.WindowsWDK.10.0.22621, 17.0.6, stable, dev, x86_64-pc-windows-msvc)	20m 58s
Analyze (Microsoft.WindowsWDK.10.0.22621, 17.0.6, stable, dev, aarch64-pc-windows-msvc)	19m 17s
Analyze (Microsoft.WindowsWDK.10.0.22621, 17.0.6, stable, release, x86_64-pc-windows-msvc)	17m 25s
Analyze (Microsoft.WindowsWDK.10.0.22621, 17.0.6, stable, release, aarch64-pc-windows-msvc)	17m 26s
Analyze (Microsoft.WindowsWDK.10.0.22621, 17.0.6, beta, dev, x86_64-pc-windows-msvc)	18m 44s
Analyze (Microsoft.WindowsWDK.10.0.22621, 17.0.6, beta, dev, aarch64-pc-windows-msvc)	21m 54s
Analyze (Microsoft.WindowsWDK.10.0.22621, 17.0.6, beta, release, x86_64-pc-windows-msvc)	18m 44s
Analyze (Microsoft.WindowsWDK.10.0.22621, 17.0.6, beta, release, aarch64-pc-windows-msvc)	19m 36s
Analyze (Microsoft.WindowsWDK.10.0.22621, 17.0.6, nightly, dev, x86_64-pc-windows-msvc)	20m 48s
Analyze (Microsoft.WindowsWDK.10.0.22621, 17.0.6, nightly, dev, aarch64-pc-windows-msvc)	18m 2s
Analyze (Microsoft.WindowsWDK.10.0.22621, 17.0.6, nightly, release, x86_64-pc-windows-msvc)	18m 45s
Analyze (Microsoft.WindowsWDK.10.0.22621, 17.0.6, nightly, release, aarch64-pc-windows-msvc)	17m 26s
	3h 49m 5s

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