Dragging! & basic proportional box resize frm cursor distance to box pos

Still need to add resize via 'pulling' to stretch the box out from a side or 2 sides diagonally.

Also some general clenaup of code

code/host/host.odin

@@ -280,6 +280,8 @@ main :: proc()
 		verify( sectr_api.lib_version != 0, "Failed to initially load the sectr module" )
 	}
 
+	free_all( context.temp_allocator )
+
 	running   = true;
 	sectr_api = sectr_api
 	sectr_api.startup(