Move Hercules DJControl MP3 e2 / MP3 LE / Glow manual from wiki

[loziniak]

No description provided.

[ronso0]

Thank you for this PR.
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I didn't look at the changes, yet, though I noticed the CI complaints. I think it's just a spelling issue (here https://github.com/mixxxdj/manual/actions/runs/11517598740/job/32073901640?pr=697#step:4:105, also adjust the column markers after adding the 'p' otherwise Sphinx will complain).

You can catch issues like this early if you install pre-commit locally, as mentioned in the prep instructions https://github.com/mixxxdj/manual#editing-the-manual-using-git-recommended

Let us know if you need help.

[ronso0]

Some thoughts:
(please don't take them as demands / requirements for merging, but I think instead of an almost 1:1 copy we should polish this a bit in order to make the manual addition really helpful)

• I think the "Mapping description (by knob/button)" section should be placed before the 'by-function' sections
• IMO the full-size images for the 'by-function' sections make the page unnecessarily long. Wouldn't smaller overviews suffice?
• 'by-function' sections: I think the essential information could be more accessible, eg. we could merge & swap the colums so it's [number + control] | function. There is also the :hwlabel: tag:

  :hwlabel:`(button label)`