change(rpc): `search` module reformatting

I've studied schema.py and am about to extend search.py, but noticed that my auto-formatter got busy in the file as soon as I started to add code. So instead of submitting one PR with a lot of "whitespace change noise", I'm putting forth the reformatting changes here first. The next PR (based off this branch) will have the actual additions.

Please let me know if you're using a different formatter and I'll adjust my setup so that our changes won't fight back and forth.