[Feature Request] Add command-line flags (-h, --version, etc.)

[rehashedsalt]

Currently, when ship is invoked with any arguments -- flags or otherwise -- it just launches the game. Per this thread, alternative behavior would be desirable so as to enable things like custom multi-version launchers or to otherwise quickly determine what build a particular binary is.

Right now, we just need two flags:

• -h/--help: Displays some help text
• --version: Displays the version of Ship of Harkinian in a machine-parseable format. The thread suggests ${SEMVER} ${CODENAME_MAJOR}-${CODENAME_MINOR} ${GIT_BRANCH} ${GIT_COMMIT_SHORT_HASH} ${BUILD_DATE} in space-separated arguments. As an example: 8.0.0 macready-charlie develop-macready 0ddb071 2023-11-15. The exact format isn't terribly important, it just needs to be parseable (i.e. don't dash-separate).

I'd recommend not aliasing -v to --version so it could be used as an alias for --verbose later down the line, if configurable log verbosity is something anyone's interested in.