Vendor helgoboss/helgobox (ReaLearn) as basis for custom UI fork

Stripped upstream git history; starting point for replacing the native
SWELL/Win32 mapping UI with something more suited to bulk editing.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

plugin-reaper-realearn/resources/controller-presets/factory/behringer/x-touch-one.preset.luau

@@ -0,0 +1,26 @@
+--- name: X-Touch One
+--- realearn_version: 2.16.0
+--- author: helgoboss
+--- description: |
+---     This controller preset implements support for the Behringer X-Touch One controller in MCU mode.
+---
+---     The MC modes cover all buttons and work great with the "Mackie Control" preset. A potential
+---     downside is that the device itself controls the "Master" button, so you can’t use that button in
+---     ReaLearn to customize its logic.
+--- setup_instructions: |
+---     Select the correct mode by holding the stop button and pressing the encoder:
+---     
+---     - If you have firmware < 1.10 (the firmware is displayed at startup), use mode "MC Std"
+---     - If you have at least firmware 1.10, use mode "MC user"
+--- device_manufacturer: Behringer
+--- device_name: X-Touch One
+--- provided_schemes: [daw]
+
+--!strict
+
+local commons = require("mackie/control-universal-lib/preset-common")
+
+return commons.create_compartment {
+    companion_data = nil,
+    support_x_touch_colors = true,
+}