add overlay

Author: aromanovv

config/sofle.overlay

@@ -0,0 +1,23 @@
+/ {
+    left_encoder: encoder_left {
+        compatible = "alps,ec11";
+        a-gpios = <&pro_micro 21 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>;
+        b-gpios = <&pro_micro 20 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>;
+        steps = <80>;
+        status = "okay";
+    };
+
+    right_encoder: encoder_right {
+        compatible = "alps,ec11";
+        a-gpios = <&pro_micro 20 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>;
+        b-gpios = <&pro_micro 21 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>;
+        steps = <80>;
+        status = "okay";
+    };
+
+    sensors: sensors {
+        compatible = "zmk,keymap-sensors";
+        sensors = <&left_encoder &right_encoder>;
+        triggers-per-rotation = <20>;
+    };
+};