net: add synchronous, role-neutral net.BoundSocket #8083

Job	Run time
Build slim tarball	3m 53s
x86_64-darwin: with shared libraries	38m 49s
x86_64-linux: with shared libraries	27m 32s
aarch64-linux: Cache V8 build	22s
aarch64-darwin: with shared libraries	29m 13s
aarch64-linux: with shared boringssl-0.20260526.0	24m 13s
aarch64-linux: with shared openssl-3.0.20	24m 20s
aarch64-linux: with shared openssl-4.0.0	24m 23s
aarch64-linux: with shared openssl-3.5.6	24m 21s
aarch64-linux: with shared openssl-3.6.2	24m 46s
aarch64-linux: with shared openssl-1.1.1w	23m 27s
Build slim tarball	3m 53s
x86_64-darwin: with shared libraries	38m 49s
aarch64-linux: Cache V8 build	22s
x86_64-linux: with shared libraries	27m 32s
aarch64-linux: with shared openssl-3.5.6	21m 49s
aarch64-darwin: with shared libraries	29m 13s
aarch64-linux: with shared boringssl-0.20260526.0	24m 13s
aarch64-linux: with shared openssl-1.1.1w	23m 27s
aarch64-linux: with shared openssl-3.6.2	24m 46s
aarch64-linux: with shared openssl-4.0.0	24m 23s
aarch64-linux: with shared openssl-3.0.20	24m 20s
	8h 8m 6s

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