refactor spatial::ComponentSet into just spatial::state->components

src/spatial.cpp

···
 Array<spatial::Component> *
 spatial::get_components()
 {
-    return &spatial::state->component_set.components;
+    return &spatial::state->components;
 }
 
 
 spatial::Component *
 spatial::get_component(entities::Handle entity_handle)
 {
-    return spatial::state->component_set.components[entity_handle];
+    return spatial::state->components[entity_handle];
 }
 
 
···
 spatial::init(spatial::State *spatial_state, memory::Pool *asset_memory_pool)
 {
     spatial::state = spatial_state;
-    spatial::state->component_set = {
-        .components = Array<spatial::Component>(
-            asset_memory_pool, MAX_N_ENTITIES, "spatial_components", true, 1
-        )
-    };
+    spatial::state->components =  Array<spatial::Component>(
+        asset_memory_pool, MAX_N_ENTITIES, "spatial_components", true, 1);
 }

src/spatial.hpp

···
         Component *last_model_matrix_spatial_component;
     };
 
-    struct ComponentSet {
-        Array<Component> components;
-    };
-
     struct State {
-        ComponentSet component_set;
+        Array<Component> components;
     };