windows: use WiX to make MSI installers
WiX makes .msi installers. This drops nsis and makes .exe installers no longer available.
Required for !1000 (merged) due to long paths not being supported by NSIS.
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WiX makes .msi installers. This drops nsis and makes .exe installers no longer available.
Required for !1000 (merged) due to long paths not being supported by NSIS.