Refactor project

Crealned up some TODOs, FIXMEs etc. Added better error handling. Looks
better, feels better.

graphics/src/mesh_controller.h

@@ -13,6 +13,7 @@
 #define RSE_MESH_CONTROLLER_H
 
 #include "vulkan_commons.h"
+#include "utilities/rse_commons.h"
 
 /**
  * @brief Create a new mesh for provided vertices and indices.
@@ -33,7 +34,7 @@ uint16_t create_mesh(struct rse_vertex_t* vertices,
  * @param mesh_id Mesh id
  * @param instance_data Transformation info
  */
-void create_mesh_instance(uint16_t mesh_id,
+rse_err_t create_mesh_instance(uint16_t mesh_id,
                           struct rse_instance_data_t instance_data);
 
 /**
@@ -60,10 +61,12 @@ size_t get_indices_count(uint16_t mesh_id);
  */
 size_t get_instances_count(uint16_t mesh_id);
 
+/**
+ * @brief Get vertex offset in vertex buffer for selected mesh
+ *
+ * @param mesh_id Mesh identifies
+ * @return size_t Offset
+ */
 size_t get_vertex_offset(uint16_t mesh_id);
 
-VkDrawIndexedIndirectCommand get_indices_data_buffer(uint16_t mesh_id);
-
-
-
 #endif /* RSE_MESH_CONTROLLER_H */