Add Network Scan helper class

Add a helper class that builds the common interface and performs the
network scan for two different network scan APIs.

Bug: 115401728
Test: Builds & manual test
Merged-In: I48c743270a8adee9a18628f95a8724ea3a40e41d
Change-Id: I48c743270a8adee9a18628f95a8724ea3a40e41d
2 files changed