renamed command turn to eturn and added commands estate and espeed for controlling the engine's state and speed respectively.

config/commands.yaml

@@ -1,7 +1,13 @@
 commands:
-    turn:
+    eturn:
         controller: engines_ctrl
         function: turn
+    estate:
+        controller: engines_ctrl
+        function: set_engine_state
+    espeed:
+        controller: engines_ctrl
+        function: set_engine_speed
     led_1_on:
         controller: led_test_1
         function: "on"