Grim/explorer memory vis

[jgrimTT]

Ticket

Link to Github Issue

Problem description

Creating the memory visualization function.

[vprajapati-tt]

Great stuff! Overall some changes requested on where in the code the attribute gets added in.

I know for each op we collect the attributes in the get_attributes function, but you should be able to expose the attribute list to some helper functions and append them using these helper functions. In the OpHandler add a function add_attribute and call this before the line graph_node = operation.make_graph_node() to add the Memory attributes (if present).