rewrite esc controller: periodic process func

spinnyboy_rust/src/bin/dc_driver/mod.rs

@@ -1,13 +1,2 @@
-pub mod afroesc;
+//pub mod afroesc;
 pub mod dshot;
-pub enum EscState {
-    Starting,
-    Running,
-    Stopping,
-    Stop,
-}
-//taken from: https://docs.arduino.cc/language-reference/en/functions/math/map/
-//used for the ramp up of the spincoater
-pub fn arduino_map(x: i32, in_min: i32, in_max: i32, out_min: i32, out_max: i32) -> i32 {
-    return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
-}