Move socket_functions impl #2363

Job	Run time
macOS [UBSAN] [lmdb \| clang]	34m 42s
Linux [UBSAN] [lmdb \| clang]	41m 14s
macOS [ASAN] [lmdb \| clang]	26m 23s
Linux [ASAN] [lmdb \| clang]	40m 22s
macOS [TSAN] [lmdb \| clang]	30m 28s
Linux [ASAN_INT] [lmdb \| clang] (Errors Ignored)	39m 0s
macOS [UBSAN] [rocksdb \| clang]	41m 56s
Linux [TSAN] [lmdb \| clang]	41m 22s
macOS [ASAN] [rocksdb \| clang]	39m 0s
Linux [LEAK] [lmdb \| clang]	37m 19s
macOS [TSAN] [rocksdb \| clang]	51m 20s
Linux [UBSAN] [rocksdb \| clang]	48m 14s
Linux [ASAN] [rocksdb \| clang]	51m 59s
Linux [ASAN_INT] [rocksdb \| clang] (Errors Ignored)	55m 44s
Linux [LEAK] [rocksdb \| clang]	52m 35s
	10h 31m 38s

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