vfs: add minimal node:vfs subsystem #6894

Job	Run time
Build slim tarball	1m 13s
aarch64-darwin: with shared libraries	31m 26s
x86_64-darwin: with shared libraries	41m 38s
aarch64-linux: Cache V8 build	23s
x86_64-linux: with shared libraries	28m 56s
aarch64-linux: with shared openssl-1.1.1w	23m 49s
aarch64-linux: with shared openssl-3.0.19	25m 21s
aarch64-linux: with shared openssl-3.6.1	24m 46s
aarch64-linux: with shared openssl-3.5.5	25m 7s
aarch64-linux: with shared openssl-4.0.0	24m 55s
aarch64-linux: with shared boringssl-0.20260413.0	25m 2s
	4h 12m 36s

Provide feedback