[Feature Request] Better visualization for common dictionary data structures in SOS

[noahfalk]

When developers are using SOS to explore managed data structures, some of the most common ones are basic container types such as Dictionary and ConcurrentDictionary. It would be helpful if SOS's object visualization code could offer additional information on these types, helping to understand what is logically in the dictionary rather than forcing users to manually search through large bucket arrays to determine the key-value pairs stored there.