Add new ACTION_WIFI_DETAILS_SETTINGS to Settings

- Need to export the interface to Quick Settings to launch Wi-Fi Network
details settings.

- Rename WifiNetworkDetailsFragment.class

Bug: 191475923
Test: manual test with the topic CLs.
make RunSettingsRoboTests
atest -c SettingsUnitTests:com.android.settings.wifi \
         SettingsUnitTests:com.android.settings.network

Change-Id: Id2fd8c9b3b113ffbb49168305b05c67392fa4d87

tests/robotests/src/com/android/settings/wifi/WifiEntryPreferenceTest.java

@@ -111,7 +111,6 @@ public class WifiEntryPreferenceTest {
 
         assertThat(pref.getTitle()).isEqualTo(MOCK_TITLE);
         assertThat(pref.getSummary()).isEqualTo(MOCK_SUMMARY);
-        assertThat(false).isTrue();
     }
 
     @Test