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/mackie/control-universal.preset.luau

@@ -0,0 +1,21 @@
+--- name: Mackie Control Universal
+--- realearn_version: 2.16.0
+--- author: helgoboss
+--- device_manufacturer: Mackie
+--- device_name: Control Universal
+--- description: |
+---     This controller preset implements the Mackie Control Universal (MCU) MIDI protocol. It is supported by many
+---     DAW control surfaces out there. I have tested it with Behringer X-Touch One, Behringer X-Touch Compact and
+---     iCON Platform M+.
+--- setup_instructions: |
+---     You probably must put your controller into MCU mode for using this controller preset.
+--- provided_schemes: [daw]
+
+--!strict
+
+local commons = require("mackie/control-universal-lib/preset-common")
+
+return commons.create_compartment {
+    companion_data = nil,
+    support_x_touch_colors = false,
+}