Editor freezes while sync-settings checking the backup

[seia-soto]

Describe the bug
Editor freezes while sync-settings checking the backup.

To Reproduce
Steps to reproduce the behavior:

1. Open the editor and the editor will freeze a few seconds.

Expected behavior
Able to edit or do something other things while sync-settings checking the backup.

Screenshots

• When I click somewhere, the yellow circle will be exposed.

Versions
OS: Win 10 Pro x64 (18363.815)
Atom : 1.46.0
Electron: 4.2.7
Chrome : 69.0.3497.128
Node : 10.11.0

apm 2.4.3
npm 6.2.0
node 10.2.1 x64
atom 1.46.0
python 2.7.17
git 2.26.2.windows.1
visual studio 2015

[UziTech]

The check could be moved to a worker to prevent blocking the main thread.

PRs are welcome 😁