[orx-math] Add RBF interpolation utilities with 2D interpolator, demos, and shader phrases

orx-math/build.gradle.kts

@@ -40,6 +40,7 @@ kotlin {
                 implementation(project(":orx-color"))
                 implementation(project(":orx-jvm:orx-gui"))
                 implementation(project(":orx-shade-styles"))
+                implementation(project(":orx-shader-phrases"))
             }
         }
     }