feat: multiple lights kinda shadow support (shader is missing)

include/components/light.h

@@ -2,10 +2,25 @@
 #define COMPONENTS_LIGHT_H_
 
 #include <glm/glm.hpp>
+#include "renderer/renderer.h"
 
 struct light {
+    friend class Renderer;
+public:
+    enum LightType {
+        DIRECTIONAL = 0,
+    };
+    LightType type;
     glm::vec3 color;
     float intensity;
+
+    light(LightType t, const glm::vec3& c, float i)
+        : type(t), color(c), intensity(i),
+          shadowMap(0), fbo(0), lightSpace(1.0f) {}
+private:
+    unsigned int shadowMap;
+    unsigned int fbo;
+    glm::mat4 lightSpace;
 };
 
 #endif // COMPONENTS_LIGHT_H_