Adding Norm and Remap functions

// Normalize input value within input range
// Remap input value within input range to output range

src/raymath.h

@@ -154,6 +154,17 @@ RMDEF float Lerp(float start, float end, float amount)
     return start + amount*(end - start);
 }
 
+// Normalize input value within input range
+RMDEF float Norm(float value, float start, float end)
+{
+    return (value - start) / (end - start);
+}
+
+// Remap input value within input range to output range
+RMDEF float Remap(float value, float inputStart, float inputEnd, float outputStart, float outputEnd) {
+    return Lerp(outputStart, outputEnd, Norm(value, inputStart, inputEnd));
+}
+
 //----------------------------------------------------------------------------------
 // Module Functions Definition - Vector2 math
 //----------------------------------------------------------------------------------