Bring CLI to feature parity with web interface

[MikkelPaulson]

This is not a priority for me, but since it's been asked, this ticket is to document the work that would be required for initiative.sh to run effectively at the command line.

The first several months of development took place as a CLI app before I ported it to WebAssembly, so the core crate (encompassing the bulk of the logic: command parsing, character generators, etc.) ran and continues to run well at the command line. However, the cli crate is no longer at parity with the web crate, missing the following features:

• [x] #338
• [ ] CLI: Rich text formatting
• [ ] CLI: Scrolling
• [ ] CLI: Local data storage
• [ ] CLI: Import/export
• [ ] CLI: Automatic builds
• [ ] CLI: Add download link on web interface

Note that there are two command-line interfaces, rich (the default) and light (used when the input is not a tty, eg. if you run echo npc | cargo run). There is not currently a switch or configuration option to force a particular interface.

[mplauman]

Hey there! Love what you're doing with the project, but I'm kind of a command line junky. Are you still open to help bringing the CLI up to parity with the web crate?

I have a pull request that adds support for the autocomplete popup, if you'd like to take a gander.