[XAP][Refactor] syntax sugar

[amrsoll]

Description

Refactor XAP cli code to be more flexible and clean. I am not 100% on all the change, namely because I wasn't always able to confirm the magic numbers used in the code.

Also fixes a few bugs:

• Display the whole payload when using qmk xap listen
• cli forces the use of an action (See CliAction)

Potential problem: I tried to enforce LSB/MSB byte order to be correct everywhere, but unsure how well it will play out on Windows, where I think the hex() command might behave differently?

Note: The xap dump command didn't work for me before my changes, so I did the best I could to keep the behaviour same same

Types of Changes

• Core
• Bugfix
• New feature
• Enhancement/optimization
• Keyboard (addition or update)
• Keymap/layout/userspace (addition or update)
• Documentation

Issues Fixed or Closed by This PR

N/A

Checklist

• My code follows the code style of this project: C, Python
• I have read the PR Checklist document and have made the appropriate changes.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have tested the changes and verified that they work and don't break anything (as well as I can manage).

[zvecr]

The code in this area is throwaway, with the intention to be mostly completely replaced by #15623. It exists right now as more of a playground to help develop the foundations of the framework.

To that effect, theres not a need to try and productionise it.

[zvecr]

Most of the proposed changes have either been wrapped up in recent CLI updates, or no longer apply.

Will pick back up when work starts on #15623.