feat: add perlin noise

include/Cubed/tools/perlin_noise.hpp

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <vector>
+
+class PerlinNoise {
+public:
+    static void init();
+    static float noise(float x, float y, float z);
+private:
+    static inline bool is_init = false;
+    static inline std::vector<int> p;
+
+    static float fade(float t);
+    static float lerp(float t, float a, float b);
+    static float grad(int hash, float x, float y, float z);
+};