sha3 utilities: Print or check SHA3 digests

Command line that wraps sha3 lib from RustCrypto/hashes.
Commands and options are similar to the GNU Linux command shaXXXsum

Tasks

• Build skeleton based on man page of sha512;
• Create hash from file
  • cargo run -- -a 256 ./tests/data/f1.raw
  • cargo run -- -a 512 ./tests/data/
• Create hash from pipe command
• read hash sum sums from the FILEs and check them
• Tests with various target
  • Development platform x86_64 GNU/Linux
  • Tests validity of hashes