This used the CarrierConfigManager to get the CarrierSettings activity
component and open that activity when the preference is clicked.
Bug: 117651939
Test: make -j40 ROBOTEST_FILTER=telephony RunSettingsRoboTests
Change-Id: Ic5267bba18ab32fbcc2e04aa61e7361151130275
Only show it when:
1. It is in CDMA or GSM mode
2. CarrierConfig tell settings to show it
Bug: 114749736
Test: RunSettingsRoboTests
Change-Id: I45ecbc86c793ebec602142be208058e2043a2ba7