Add a new About Phone page.

This adds the "Me Card" page. The current functionality is to show
information based upon the first account added to the system. The page
shows the user's avatar, name, primary account, and phone number.

Bug: 63819909
Test: Robotest

Change-Id: I64bfae922e828994b2b87009d0647e67dab0da42

src/com/android/settings/accounts/AccountFeatureProviderImpl.java

@@ -0,0 +1,16 @@
+package com.android.settings.accounts;
+
+import android.accounts.Account;
+import android.content.Context;
+
+public class AccountFeatureProviderImpl implements AccountFeatureProvider {
+    @Override
+    public String getAccountType() {
+        return null;
+    }
+
+    @Override
+    public Account[] getAccounts(Context context) {
+        return new Account[0];
+    }
+}