Add ColorCorrection to orx-fx

orx-fx/src/main/kotlin/color/ColorCorrection.kt

@@ -0,0 +1,28 @@
+package org.openrndr.extra.fx.color
+
+import org.openrndr.draw.*
+import org.openrndr.extra.fx.filterFragmentCode
+import org.openrndr.extra.parameters.Description
+import org.openrndr.extra.parameters.DoubleParameter
+
+@Description("Color correction")
+class ColorCorrection : Filter(Shader.createFromCode(filterVertexCode, filterFragmentCode("color/color-correction.frag"))) {
+    @DoubleParameter("brightness", -1.0, 1.0, order = 0)
+    var brightness: Double by parameters
+
+    @DoubleParameter("contrast", -1.0, 1.0, order = 1)
+    var contrast: Double by parameters
+
+    @DoubleParameter("saturation", -1.0, 1.0, order = 2)
+    var saturation: Double by parameters
+
+    @DoubleParameter("hue shift", -180.0, 180.0, order = 3)
+    var hueShift: Double by parameters
+
+    init {
+        contrast = 0.0
+        brightness = 0.0
+        saturation = 0.0
+        hueShift = 0.0
+    }
+}