Improved help text

[ksadman]

Is your feature request related to a problem? If so, please describe.

After cloning this repo, I was attempting to compile and then play the game. I was able to figure out how to compile the game and run it, so that was fine (though maybe it would be nice to have a .jar version in the repo or at least text in the README describing the process for people unfamiliar with Gradle, but that's beyond the scope of this issue). But once I launched the game, I didn't really understand what to do. I saw there were commands to run, but I didn't know, for example, what I could construct.

Describe what you'd like

I would like if there was more context in the help text or at least an option to view more help text. For example, if I run
help construct
Maybe that could tell me what I could construct. Or at least it could suggest I run another command like
help constructable
That would tell me the list of constructables, how much they cost, and what they do (though I think now, after skimming through the code that they don't really /do/ much yet)

Describe alternatives you've considered

The only alternative I see to better help text is to read through the code to figure out what the player can do

Additional context

I started writing this ticket before I actually dug into the code much.