Update Reloop Beatmix 2/4 mapping to reflect new effects UI

[sblaisot]

Following changes in effects section of Deere and Tango, update the mapping on Reloop Beatmix 2/4 to control 3 effects by effect unit by default (previously single effect mode was the default).

[sblaisot]

wiki updated accordingly: https://www.mixxx.org/wiki/doku.php/reloop_beatmix_4#effects_section

[sblaisot]

any chance to have this merged before 2.1 @Be-ing @daschuer @uklotzde ?

[Be-ing]

Yes. I will review controller mappings after the beta release. Don't worry, we'll get this done in 3 months :).

[Be-ing]

I will get to reviewing this soon, but for now I will be taking a break from development and code review for a few days.

[Be-ing]

I took a look at the wiki and I don't think either of the modes make much sense for 2.1. At a minimum, I suggest mapping the knobs to the metaknobs and the Beats encoder to the dry/wet knob. Because this controller does not have buttons to toggle the enable switches of the effects, I suggest setting every effect to enabled in the init function. To avoid confusion when setting up like I described in #1103, you could also set the dry/wet knob to fully dry on startup.

If you want to go the extra mile and implement a way to control the parameters of effects, you could use turning the Beats encoder while holding it pushed down to switch the focus between effects.

[Be-ing]

@sblaisot unless you have time to implement the changes in my above comment within the next day or two, let's push this back to 2.2.

[Holzhaus]

What's the status of this?

[github-actions]

This PR is marked as stale because it has been open 90 days with no activity.

[Holzhaus]

@sblaisot Do you intend to pick this up at some point, or should we close this?