Add Functionality to Filter/Search Items in the Explorer Panel on the GraphQL Console

### Is your proposal related to a problem?

Currently, users with large amounts of tables are having trouble finding queries/mutations in the list on the explorer.

### Describe the solution you'd like

Have a search box where users could type a word and have the list filter down based on that. It would be even better if it could be a fuzzy find similar to what Github has done on its "Go to file" page.

It would also be nice if the Queries, Mutations, and Subscriptions sections could be in a tabbed interface where you could quickly swap the tabs to see the each list, rather than adding a mutation/subscription to get access to the list.