Windows unicode (`_W`) api for all Win32 functions #453

Job	Run time
cargo-deny (advisories)	17s
cargo-deny (bans licenses sources)	15s
lint	24s
aarch64-apple-darwin-nightly / build	23s
aarch64-apple-ios / build	27s
aarch64-apple-darwin / build	21s
aarch64-unknown-linux-gnu / build	45s
aarch64-unknown-linux-musl / build	56s
arm-linux-androideabi / build	37s
armv7-linux-androideabi / build	17s
i686-pc-windows-gnu / build	1m 37s
i686-pc-windows-msvc / build	1m 57s
i686-unknown-linux-gnu / build	40s
i686-unknown-linux-musl / build	1m 8s
msrv-aarch64-apple-darwin / build	44s
msrv-arm-linux-androideabi / build	37s
msrv-x86_64-unknown-freebsd / build	47s
msrv-x86_64-unknown-linux-gnu / build	52s
msrv-x86_64-pc-windows-msvc / build	54s
msrv-x86_64-unknown-linux-musl / build	55s
msrv-x86_64-unknown-netbsd / build	38s
x86_64-apple-darwin / build	34s
x86_64-pc-windows-gnu / build	2m 28s
x86_64-pc-windows-msvc-nightly / build	1m 15s
x86_64-pc-windows-msvc / build	2m 14s
x86_64-unknown-freebsd / build	35s
x86_64-unknown-linux-gnu / build	56s
x86_64-unknown-linux-gnu-nightly / build	34s
x86_64-unknown-linux-musl / build	52s
x86_64-unknown-netbsd / build	26s
	25m 25s

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