Add intent action for BT device detail page

Also update detail page to accept cold start:
1. Check whether profile is ready
2. When it is ready, refresh UI

Bug: 123665527
Test: SettingsRoboTests
Change-Id: I39382fd97e9da46fca08cd2e4a3ef15d32703664

src/com/android/settings/Settings.java

@@ -156,6 +156,7 @@ public class Settings extends SettingsActivity {
     }
     public static class WebViewAppPickerActivity extends SettingsActivity { /* empty */ }
     public static class AdvancedConnectedDeviceActivity extends SettingsActivity { /* empty */ }
+    public static class BluetoothDeviceDetailActivity extends SettingsActivity { /* empty */ }
 
     // Top level categories for new IA
     public static class NetworkDashboardActivity extends SettingsActivity {}