Adding driver for rotary encoder support

examples/encoders/quadrature-interrupt/main.go

@@ -0,0 +1,28 @@
+//go:build macropad_rp2040
+
+package main
+
+import (
+	"machine"
+
+	"tinygo.org/x/drivers/encoders"
+)
+
+var (
+	enc = encoders.NewQuadratureViaInterrupt(machine.ROT_A, machine.ROT_B)
+)
+
+func main() {
+
+	enc.Configure(encoders.QuadratureConfig{
+		Precision: 4,
+	})
+
+	for oldValue := 0; ; {
+		if newValue := enc.Position(); newValue != oldValue {
+			println("value: ", newValue)
+			oldValue = newValue
+		}
+	}
+
+}