Support Retrieving Verified Contracts Unflattened

Currently when hovering on an address and clicking on "VerifiedContract" it retrieves the source code of the Smart Contract deployed at that address, but in case the Smart contract is composed of multiple files it outputs a flattened version of the Smart Contract.

it would be nice to either retrieve all the files in a folder or alternatively to give the user an option to choose between flattening or not

Start by tracing the existing address-hover action for “VerifiedContract” and how it retrieves and displays source code. Determine whether the intended result is selectable flattening or separate files, then verify that multi-file verified contracts are presented in the chosen form without breaking the current action.

Written by the indexing model from the issue text.