wifi: add API: isUserConfiguration

The OEM needs to know the configuration is generated by framework.
Add API to indicate if the configuration is configured by user.

Bug: 149928886
Bug: 170924305
Bug: 136939847
CTS-Coverage-Bug: 179557841
Test: atest -c FrameworksWifiTests
Test: atest -c FrameworksWifiApiTests
Change-Id: I80ef9944f7b43908b4a6bec8d4d2a5b455959afc
7 files changed