this is a doozy - device auto discovery and handling

The main goal was to decouple more things
We got devices being looked for in the background and the stream view
is like a device now too

devices/cdashdisplay/info.go

@@ -1,9 +1,27 @@
 package cdashdisplay
 
-import "esdi/peripheral/devices"
+import (
+	"esdi/peripheral/devices"
+	"esdi/telemetry"
+)
 
 // TODO: I believe we don't need the #esdi/peripheral/devices thing anymore
 const (
 	ID   = devices.CDashDisplayDevID
-	Name = devices.CDashDisplayDevName
+	NAME = devices.CDashDisplayDevName
 )
+
+func (cds *CDashDisplay) Name() string {
+	return NAME
+}
+
+func (cds *CDashDisplay) RequiredFields() map[int16]telemetry.FieldID {
+	fields := make(map[int16]telemetry.FieldID, len(cds.State.Layout.Windows))
+
+	for _, w := range cds.State.Layout.Windows {
+		fieldID, _ := telemetry.GetFieldID(w.UIData.TelemetryField)
+		fields[w.UIData.IDX] = fieldID
+	}
+
+	return fields
+}