Implement timer* macros, and GNU's getopt_long

include/bits/sys/time.h

src/header/getopt/cbindgen.toml

src/header/getopt/mod.rs

src/header/mod.rs

src/header/sys_time/cbindgen.toml

src/header/unistd/getopt.rs

tests/Makefile

tests/expected/time/macros.stderr

tests/expected/time/macros.stdout

tests/expected/unistd/getopt_long.stderr

tests/expected/unistd/getopt_long.stdout

tests/time/macros.c

tests/unistd/getopt_long.c