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/main-presets/factory/akai/apc-key-25-mk2/playtime.preset.luau

@@ -0,0 +1,34 @@
+--- name: APC Key 25 mk2 - Playtime
+--- realearn_version: 2.16.0-pre.8
+--- author: helgoboss
+--- device_manufacturer: Akai
+--- device_name: APC Key 25 mk2
+--- description: |
+---     This main preset turns the APC Key 25 mk2 into a capable device for controlling Playtime. Hold Shift
+---     to access advanced functions.
+--- used_schemes: [akai/apc-key-25-mk2]
+--- required_features: [playtime]
+
+--!strict
+
+
+local commons = require("akai/apc-lib/playtime-commons")
+
+return commons.create_compartment {
+    use_column_stop_buttons = true,
+    stop_column_if_slot_empty = true,
+    mute_track_button_id = "row3/play",
+    arm_track_button_id = "row4/play",
+    column_count = 8,
+    row_count = 5,
+    up_button_id = "col1/stop",
+    down_button_id = "col2/stop",
+    left_button_id = "col3/stop",
+    right_button_id = "col4/stop",
+    volume_button_id = "col5/stop",
+    pan_button_id = "col6/stop",
+    send_button_id = "col7/stop",
+    device_button_id = "col8/stop",
+    stop_all_clips_button_id = "stop-all-clips",
+    stop_all_clips_need_shift = false,
+}