R1:b9d004e9c41b

Integrate Diviner with global search

Summary: Fixes T7458. Integrates #diviner into #applicationsearch by indexing `DivinerLiveBook` and `DivinerLiveSymbol` search documents. Depends on D13157.

Test Plan: Ran `./bin/search index --all --type BOOK` and `./bin/search index --all --type ATOM` and then searched for various symbols via global search.

Reviewers: epriestley, #blessed_reviewers

Subscribers: Korvin, epriestley

Maniphest Tasks: T7458

Differential Revision: https://secure.phabricator.com/D13090