Adding a summary of used operations

[arogozhnikov]

Hey, thanks for netron!

How about adding a statistics of used operations in the graph (see an example below)?

One particular moment why I am interested in this - TF has quite dangerous ops like WriteFile, RPC, etc., and searching for them in a sorted list is sometimes more convenient than looking through the whole graph.

[lutzroeder]

Should the list be sorted alphabetically or by count?

[arogozhnikov]

I definitely prefer by name, as from security point number of times these operations present does not matter.

[lutzroeder]

Duplicate of #204

[fengyuentau]

Just came across this issue when I wanted to make this feature request. Is this feature available in the latest Netron? I do not find a button to open a page of summary of operators.