[Boost] Cache log viewer should have filters

The log viewer can become very noisy on a busy site, or when doing certain actions like editing a post that deletes lots of files.
We should add filters to the viewer so the site owner can exclude or include certain entries.

There are a number of entries that aren't entirely useful, like /wp-admin/, and /wp-content/ requests that could be hidden by default, with a checkbox to show them.

/wp-json/ requests must be shown by default because those requests handle updating a post when it's edited.

A text box with a checkbox, when clicked would turn this from an exclude to an include filter.

Maybe a "show last 5 minutes" button?

Start by locating the Boost Cache log viewer entry point and reviewing how log entries are currently displayed. Define the filter controls so /wp-admin/ and /wp-content/ entries are hidden by default, /wp-json/ entries remain visible, and a text-box checkbox switches between exclude and include behavior; clarify whether the five-minute view is required.

Written by the indexing model from the issue text.