[FR] Add "--version" to apps

[mark-stopka]

Currently there is no way to determine the version of the applications, using --help option does not print version, nor does it describe --version option that I've also tried just for a sake of it. In addition to --version which would print application name, release, option --full-version should also be introduced which would also print information regarding build environment like the Haskell compiler used for build and git release and target build architecture information. If --full-version won't be introduced git information should be added to --version.

Example:

$ cardano-cli --version
cardano-cli 1.6.0
$ cardano-cli --full-version
cardano-cli (HEAD-a01b359, release, linux [x86_64]) - [The Glorious Glasgow Haskell Compilation System, version 8.8.1]

Justification:
Once cardano-node will be used by a larger audience (pool operators) it will be important for them to be able to provide exact version and build information for developers to increase chances of reproducing bugs, identifying regressions and swiftly identifying fixed issues reported by someone running older version of the node.

In addition, it seems the version information is already present in the compiled binaries, there is simply just no user-friendly way of displaying the version information.

(cardano-node)[cardano-node@26c100d710cd /srv/cardano/cardano-node]$ strings /usr/local/bin/cardano-cli | grep 8.6.5 | tail -n 1
GHC 8.6.5
(cardano-node)[cardano-node@26c100d710cd /srv/cardano/cardano-node]$ strings /usr/local/bin/cardano-cli | grep 1.6.0 | head -n 1
cardano-node-1.6.0-5GRJ1rzDvUZI6QE4xYqPDg
(cardano-node)[cardano-node@26c100d710cd /srv/cardano/cardano-node]$

NOTE:
Perhaps aliases should be defined and used for the compiler version as The Glorious Glasgow Haskell Compilation System is rather long, so ghc with version appended could be used instead.