wip: refactor pt.33: 33e; midi player traits

crates/tek_api/src/model_arranger_track.rs

@@ -0,0 +1,13 @@
+use crate::*;
+
+#[derive(Debug)]
+pub struct ArrangerTrack {
+    /// Name of track
+    pub name:   Arc<RwLock<String>>,
+    /// Preferred width of track column
+    pub width:  usize,
+    /// Identifying color of track
+    pub color:  ItemColor,
+    /// The MIDI player for the track
+    pub player: MIDIPlayer
+}