main: add flags to display version

DPDK / grout

grout # a graph router based on DPDK

BSD 3-Clause "New" or "Revised" License

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main: add flags to display version #66

Closed rjarry closed 1 week ago

rjarry commented 1 week ago

Add -V, --version flags to both grout and grcli. When these flags are specified, print the program version and exit. Update the man pages and usage help accordingly.