Popup for showing the current operation and new app icon

This MR brings the following features;

• fix: bring the popup back for giving feedback to the user
• add: new icons for the app

src/android/res/drawable/ic_launcher_background.xml

+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+  <group android:scaleX="0.99"
+      android:scaleY="0.99"
+      android:translateX="0.54"
+      android:translateY="0.54">
+    <path
+        android:pathData="M0,13.5V108H94.5L108,94.5V0H13.5L0,13.5Z">
+      <aapt:attr name="android:fillColor">
+        <gradient 
+            android:startX="104.99"
+            android:startY="-26.62"
+            android:endX="11.55"
+            android:endY="126.08"
+            android:type="linear">
+          <item android:offset="0.14" android:color="#FF014B57"/>
+          <item android:offset="1" android:color="#FF0F7080"/>
+        </gradient>
+      </aapt:attr>
+    </path>
+  </group>
+</vector>