feat: add PlatformImpl trait for custom platform callbacks #7073

Job	Run time
release aarch64-pc-windows-msvc	11m 5s
asan aarch64-apple-darwin	12m 58s
release aarch64-apple-darwin	1m 56s
release aarch64-apple-darwin ptrcomp	2m 2s
debug aarch64-apple-darwin ptrcomp	1m 58s
release x86_64-apple-darwin	2m 0s
release x86_64-unknown-linux-gnu ptrcomp	1m 14s
debug x86_64-apple-darwin ptrcomp	1m 59s
release x86_64-unknown-linux-gnu	1m 59s
debug aarch64-apple-darwin	2m 2s
release x86_64-apple-darwin ptrcomp	1m 59s
debug x86_64-apple-darwin	1m 57s
debug aarch64-unknown-linux-gnu	2m 9s
release x86_64-pc-windows-msvc	2m 1s
debug x86_64-unknown-linux-gnu ptrcomp	2m 13s
debug x86_64-unknown-linux-gnu	1m 13s
release aarch64-unknown-linux-gnu	1m 7s
test aarch64-pc-windows-msvc	3m 59s
publish	0s
	55m 51s

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