[feature] Command to list tasks

[chadrik]

Hi,
Thanks again for the great tool.

Is your feature request related to a problem? Please describe.

As a developer, I want a command that is fast-to-type and easy-to-remember to list the available tasks within my repo, and I want the output to be colorized and easy to read. The current command moon query tasks is both too long and the formatting leaves a lot to be desired in terms of clarity.

For example, many popular task runners provide a -l flag for this purpose (nox, tox, just).

Describe the solution you'd like

I think moon ls would be a good name.

The output could be something like the following, but with color for clarity:

$ moon ls
* core:build      - Build core library
* core:lint       - Lint core library
* core:release    - Release core library
* ui:build        - Build core library
* ui:lint         - Lint frontend
* ui:release      - Release frontend

It's important that the task names that are printed can be copy-pasted to use with moon run, for convenience.

Passing the project name would limit the output to that project:

$ moon ls core
* core:build      - Build core library
* core:lint       - Lint core library
* core:release    - Release core library

The goal of this command is to provide developers with an overview of what tasks they can execute at a glance. This is the sort of command I find myself needing all the time time for the first few months in a new repo while I'm getting up to speed and I don't have all the task names memorized yet. In the rare cases where I need extra details or control (such as json output) I can alway use moon query tasks.

[milesj]

I've updated this in v1.34 to render a table of data. If that's still too much, I could look into like a --simple view.