Add filtering capabilities to event overview

[andyrichardson]

Filtering operations/responses based on core info such as:

• Operation key
• Source component
• Operation type (Mutation, Query, etc)

Along with being generally useful for focusing on certain criteria, this (filtering by key) allows us to couple our responses to operations without complicating our operation/response overview.

[andyrichardson]

Here's some designs for the filtering based on the work @sofiapoh has made