refactor: renderer (#29)

* refactor(render): move render files to subdirectory, add RAII vertex buffer/array classes

* refactor(render): encapsulate OpenGL textures into Texture class

* refactor(texture): encapsulate textures with unique_ptr and bind methods

Replace raw GLuint framebuffer textures with std::unique_ptr<Texture>. Update TextureManager to return const Texture* instead of GLuint. Use Texture::bind() for active texture binding. Add RGBA16F and RGB formats. Add texture parameter methods. Update destructors accordingly.

* refactor(render): use Texture, VertexBuffer, VertexArray classes

* feat(render): add FrameBuffer class to encapsulate framebuffer operations

* refactor(render): extract world rendering into WorldRenderer class

* refactor(render): rename projection and model matrix members for clarity

* chore(render): remove unused matrix members

* fix(texture-manager): correct delet_texture typo and add null checks for textures

src/window.cpp

@@ -1,7 +1,7 @@
 #include "Cubed/window.hpp"
 
 #include "Cubed/config.hpp"
-#include "Cubed/renderer.hpp"
+#include "Cubed/render/renderer.hpp"
 #include "Cubed/tools/cubed_assert.hpp"
 #include "Cubed/tools/font.hpp"
 #include "Cubed/tools/log.hpp"