Themes: Add Live previews for applied themes and fonts

Co-authored-by: ender1324 <ender1324@abv.bg>
Signed-off-by: AndroBuddy <anirudhchimpidi8@gmail.com>
Signed-off-by: Hưng Phan <phandinhhungvp2001@gmail.com>

res/drawable/fluid_icon.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright (C) 2020 ProjectFluid
+
+    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.
+-->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="24dp"
+    android:width="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#ffffff"
+        android:pathData="M12,3.77L11.25,4.61C11.25,4.61 9.97,6.06 8.68,7.94C7.39,9.82 6,12.07 6,14.23A6,6 0 0,0 12,20.23A6,6 0 0,0 18,14.23C18,12.07 16.61,9.82 15.32,7.94C14.03,6.06 12.75,4.61 12.75,4.61L12,3.77M12,6.9C12.44,7.42 12.84,7.85 13.68,9.07C14.89,10.83 16,13.07 16,14.23C16,16.45 14.22,18.23 12,18.23C9.78,18.23 8,16.45 8,14.23C8,13.07 9.11,10.83 10.32,9.07C11.16,7.85 11.56,7.42 12,6.9Z" />
+</vector>