[Utility] A small script to start and stop account syncs.
[Utility] A small script to start and stop account syncs.

Summary: I got tired of moving accounts manually from `sync-engine` to `sync-engine-debug` so I wrote a small script to simplify things.

Test Plan: Tested manually.

Reviewers: kav-ya, emfree, jennie

Reviewed By: jennie

Projects: #sync-engine

Differential Revision: https://review.inboxapp.com/D1220

gale320/sync-engine,Eagles2F/sync-engine,gale320/sync-engine,jobscore/sync-engine,gale320/sync-engine,PriviPK/privipk-sync-engine,Eagles2F/sync-engine,EthanBlackburn/sync-engine,EthanBlackburn/sync-engine,gale320/sync-engine,closeio/nylas,ErinCall/sync-engine,EthanBlackburn/sync-engine,nylas/sync-engine,nylas/sync-engine,EthanBlackburn/sync-engine,jobscore/sync-engine,EthanBlackburn/sync-engine,wakermahmud/sync-engine,nylas/sync-engine,wakermahmud/sync-engine,closeio/nylas,nylas/sync-engine,Eagles2F/sync-engine,closeio/nylas,closeio/nylas,ErinCall/sync-engine,gale320/sync-engine,wakermahmud/sync-engine,jobscore/sync-engine,PriviPK/privipk-sync-engine,ErinCall/sync-engine,wakermahmud/sync-engine,wakermahmud/sync-engine,jobscore/sync-engine,PriviPK/privipk-sync-engine,ErinCall/sync-engine,Eagles2F/sync-engine,PriviPK/privipk-sync-engine,Eagles2F/sync-engine,ErinCall/sync-engine,PriviPK/privipk-sync-engine