[Task]: Functionality to search through canned responses on an add-on's review page

[abhn]

Description

As an add-on reviewer, I'd like to quickly search through all the canned responses (and their content) to find the right canned response quickly. Ideally, the search input should be focused by a custom global page shortcut to not have to manually focus the input to search through canned response.

As a side note, some reviewers currently use Firefox's "find in page" search, but if an add-on has any review history, the search also picks up those activity logs which slows down getting to the canned response. The browser's "find in page" functionality has its place in our workflows, so we'd not want to overwrite the default [cmd/ctrl]+F shortcut.

Acceptance Criteria

  ### Acceptance Criteria
  - [ ] A global shortcut is active on add-on review details page that allows for quick search through canned response titles and text. The usage is documented for reviewers to refer to.

Checks

• [X] If the issue is ready to work on, I have removed the "needs:info" label.

┆Issue is synchronized with this Jira Task

[diox]

Investigate using a fancier widget (select2? some jQuery thing?) with a search box to address this.