Use new @include preprocessor added to CyberarmEngin::Shader

shaders/vertex/default.glsl

@@ -1,19 +1,6 @@
 # version 330 core
-const int MAX_LIGHTS = 4;
 
-struct Light {
-  float end;
-  float type;
-  vec3 position;
-
-  vec3 diffuse;
-  vec3 ambient;
-  vec3 specular;
-
-  vec3 direction;
-
-  float intensity;
-};
+@include "light_struct"
 
 layout(location = 0) in vec3  inPosition;
 layout(location = 1) in vec3  inColor;
@@ -59,4 +46,4 @@ void main() {
   outFragPos = vec3(model * vec4(inPosition, 1.0));
 
   gl_Position = projection * view * model * vec4(inPosition, 1.0);
-}
+}