Add rp2040_ce and add elite-pi and helios as alias (#19830)

* add rp2040_ce and add elite-pi and helios as alias (#19628)

* fix git mishap

* Update platforms/chibios/converters/promicro_to_rp2040_ce/_pin_defs.h

Co-authored-by: Joel Challis <git@zvecr.com>

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Co-authored-by: Joel Challis <git@zvecr.com>

* Tidy docs

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Co-authored-by: Conor Burns <mail@conor-burns.com>

Make Magic handling more consistent in Action Keycode handling (#9126)

Co-authored-by: Ryan <fauxpark@gmail.com>

Merge remote-tracking branch 'origin/master' into develop

Fix serial_driver.md list item numbering (#19819)

Add combo hook to allow per layer combo reference layers. (#16699)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Sergey Vlasov <sigprof@gmail.com>

Refactor Leader key feature (#19632)

Co-authored-by: Drashna Jaelre <drashna@live.com>

[Core] Tri Layer Keys (#19795)

Co-authored-by: wilba <wilba@wilba.tech>
Co-authored-by: Pablo Martínez <58857054+elpekenin@users.noreply.github.com>
Co-authored-by: Joel Challis <git@zvecr.com>
Co-authored-by: Nick Brassel <nick@tzarc.org>

Merge remote-tracking branch 'origin/master' into develop

Update documentation for LM(layer, mod) (#19284)

* Update documentation for LM(layer, mod)

* Move LM table to caveats section

Merge remote-tracking branch 'origin/master' into develop

[Docs] Resynchronizing Your Branch including submodules (#19268)

Remove matrix_init_quantum/matrix_scan_quantum (#19806)

Merge remote-tracking branch 'origin/master' into develop

[Docs] Combos example consistently uses A B keys (#19792)

[Docs] Change defines to enums in examples (#19793)

Add Michi MCU Converter support (#19163)

Merge remote-tracking branch 'origin/master' into develop

changed the undefined ON and OFF parameters to thedefined constant (#19772)

Merge remote-tracking branch 'origin/master' into develop

Update handedness by define examples (#19687)