Start refactor, restructure basic

src/basic/basic_math.h

@@ -0,0 +1,59 @@
+#pragma once
+
+struct Vec2 {
+    float x;
+    float y;
+};
+
+union Vec4 {
+    struct {
+        float x;
+        float y;
+        float z;
+        float w;
+    };
+    struct {
+        float r;
+        float g;
+        float b;
+        float a;
+    };
+};
+
+union Vec3 {
+    struct {
+        float x;
+        float y;
+        float z;
+    };
+    struct {
+        float r;
+        float g;
+        float b;
+    };
+};
+
+struct Rect2 {
+    Vec2 min;
+    Vec2 max;
+};
+
+struct Vec2I {
+    Int x;
+    Int y;
+};
+
+struct Rect2I {
+    Vec2I min;
+    Vec2I max;
+};
+
+union Color {
+    struct {
+        uint8_t r;
+        uint8_t g;
+        uint8_t b;
+        uint8_t a;
+    };
+    uint32_t value;
+};