Summary:
Sets a default key binding of `ctrl+l` to clear the screen within built-in Flipper plugins which display a log view.
Motivation: A small quality of life improvement for developers used to the default "clear screen" binding. This makes our log-rendering plugins consistent with other native apps such as terminals, Chrome DevTools, and many others.
Reviewed By: mweststrate
Differential Revision: D37782638
fbshipit-source-id: 0a85b930faaa0e9468d5391f15092aad7b6057ee