Double check input_binding_to_location_mapping

[johannesugb]

Something seems to be confusing about

	struct input_binding_to_location_mapping
	{
		vertex_input_buffer_binding mGeneralData;
		buffer_element_member_meta mMemberMetaData;
	};

Why are the parameters stride on the one hand, and offset and format on the other hand distributed to different structs?

But maybe it's okay, because that distribution is also present when compiling the configuration for the graphics pipeline in graphics_pipeline root::create_graphics_pipeline => steps 1 and 2, when the vk::VertexInputBindingDescription and vk::VertexInputAttributeDescription elements are compiled.

Everything is working, so probably it's okay.
But just double check everything once again; especially if the data structures in input_binding_to_location_mapping are okay as they are or if they could maybe be optimized somehow.