vfs: add minimal node:vfs subsystem #7044

Job	Run time
Build slim tarball	1m 34s
aarch64-linux: Cache V8 build	27s
x86_64-darwin: with shared libraries	50m 40s
x86_64-linux: with shared libraries	31m 52s
aarch64-darwin: with shared libraries	25m 20s
aarch64-linux: with shared boringssl-0.20260413.0	26m 56s
aarch64-linux: with shared openssl-1.1.1w	26m 14s
aarch64-linux: with shared openssl-3.6.1	26m 31s
aarch64-linux: with shared openssl-4.0.0	27m 15s
aarch64-linux: with shared openssl-3.0.19	26m 39s
aarch64-linux: with shared openssl-3.5.5	26m 41s
	4h 30m 9s

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