feat: zero-copy string access via ValueView and allocation-reuse APIs #7107

Job	Run time
asan aarch64-apple-darwin	19m 16s
release aarch64-pc-windows-msvc	12m 2s
release x86_64-apple-darwin	13m 13s
debug x86_64-apple-darwin ptrcomp	17m 5s
release x86_64-apple-darwin ptrcomp	11m 55s
debug x86_64-apple-darwin	16m 48s
release x86_64-unknown-linux-gnu	8m 9s
release x86_64-unknown-linux-gnu ptrcomp	9m 12s
debug x86_64-unknown-linux-gnu	14m 39s
debug aarch64-unknown-linux-gnu	28m 32s
debug aarch64-apple-darwin	13m 27s
release aarch64-apple-darwin ptrcomp	10m 16s
debug aarch64-apple-darwin ptrcomp	11m 25s
release aarch64-unknown-linux-gnu	15m 49s
release aarch64-apple-darwin	10m 47s
debug x86_64-unknown-linux-gnu ptrcomp	15m 44s
release x86_64-pc-windows-msvc	10m 10s
test aarch64-pc-windows-msvc	4m 33s
publish	0s
	4h 3m 2s

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