add diffrent brightness leds

src/led_pwm.h

@@ -0,0 +1,15 @@
+#pragma once
+
+typedef enum {
+    LED_COLOR_RED,
+    LED_COLOR_GREEN,
+} led_color_t;
+
+typedef enum {
+    LED_LEFT = 1,
+    LED_RIGHT = 2,
+    LED_BOTH = 3,
+} led_side_t;
+
+void led_init(void);
+void led_set_color(led_color_t color, led_side_t side);