[feat] search inside the view (left) pane

[kubeden]

Since diff-wide search is being worked on (#15), I think we should also be able to search in the view pane.

Possibly starting work on this after #17 gets merged.

[Terminal239]

Hi! Could you assign this issue to me to work on as part of HacktoberFest?

[kubeden]

hey there :) sure! assigned