Easier way to get started / run your code against the testsuite.

[daxida]

This would ideally be a set of justfile commands similar to what we had prior to this commit:

It should ease the process of:

• opening the file to edit (with whatever editor).
• (optional) go to the next clash.
• generate the stub.
• run the code on autosave.

Not all the steps are necessary, but I found those to be the bare minimum when solving puzzles / clashes.

[Andriamanitra]

The main problem is that you want 3 terminal panes (one for editor, one for showing the statement/test cases, and one for showing the test results) and how to split or open new terminals depends on what kind of setup the user has.

Here's a couple of ideas for how we could handle this:

• Detect if the user has a terminal multiplexer like zellij or tmux installed and use those to open the different panes.
• Provide two separate commands, and let users worry about opening the editor and terminals
  • one for automatically showing the statement & generating stub
  • one for automatically running the tests on save).