Cherish: Add support for Lockscreen clock fonts

After r16, a commit to cleanup the KeyguardClockSwtich and unify it's structure was merged.
Also, this added a new resource into the frameworks core, which allows us to overlay the custom clock font.
So, we need to overlays now to customize this. This makes me really happy because it removes the ugly method that we were doing years ago.

[nurkeinneid]:
- adapt to our ThemeUtils
- restore original copyright header - crdroid did nothing here

Change-Id: I70590910144141a534b926f884e9f08e4e3af5bc
Signed-off-by: NurKeinNeid <mralexman3000@gmail.com>
Signed-off-by: Hưng Phan <phandinhhungvp2001@gmail.com>

res/layout/lock_clock_fonts_option.xml

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2019 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_margin="7dp"
+    android:layout_gravity="center"
+    android:orientation="vertical">
+
+    <FrameLayout
+        android:id="@+id/option_tile"
+        android:layout_width="match_parent"
+        android:layout_height="75dp"
+        android:gravity="center"
+        android:layout_gravity="center"
+        android:paddingHorizontal="10dp"
+        android:paddingVertical="10dp"
+        android:background="@drawable/option_border_custom">
+
+        <TextClock android:id="@+id/option_title"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:gravity="center"
+            android:format12Hour="hh:mm"
+            android:format24Hour="kk:mm"
+            android:textAppearance="@style/OptionTitleTextAppearance"/>
+
+    </FrameLayout>
+
+    <TextView
+        android:id="@+id/option_label"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center_horizontal"
+        android:textAppearance="@style/OptionTitleTextAppearance"/>
+</LinearLayout>