[Feature][task-view-564][FOTA] move the real fota functions to isolated process

Only Configure: No
Affected branch: ZK-isolated-fota
Affected module: FOTA
Is it affected on both ZXIC and MTK: only MTK
Self-test: Yes
Doc Update: No

Change-Id: I58d6e49c8bab9b8575ca2709c702ead65859b84b
4 files changed