How the add mesh panel should work while modifying the mesh

[ANURAG-VERMA-1]

the add mesh panel should be transformed into a pop up that comes before adding the mesh to the scene and should follow these things

1. it should appear before the mesh is being added to model
   
   
2. object should be displayed as wire frame for seeing the verts,edges and faces before adding it
   
   
   
   i hope this is worked on and gets implemented with the coming versions of blender.