about: use proper icon for file size

Author: OxygenCobalt

app/src/main/res/drawable/ic_file_24.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960"
+    android:tint="?attr/colorControlNormal"
+    android:autoMirrored="true">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M240,880Q207,880 183.5,856.5Q160,833 160,800L160,160Q160,127 183.5,103.5Q207,80 240,80L560,80L800,320L800,800Q800,833 776.5,856.5Q753,880 720,880L240,880ZM520,360L520,160L240,160Q240,160 240,160Q240,160 240,160L240,800Q240,800 240,800Q240,800 240,800L720,800Q720,800 720,800Q720,800 720,800L720,360L520,360ZM240,160L240,160L240,360L240,360L240,160L240,360L240,360L240,800Q240,800 240,800Q240,800 240,800L240,800Q240,800 240,800Q240,800 240,800L240,160Q240,160 240,160Q240,160 240,160Z"/>
+</vector>

app/src/main/res/layout/fragment_about.xml

@@ -369,7 +369,7 @@
                         style="@style/Widget.Auxio.TextView.Icon"
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content"
-                        app:drawableStartCompat="@drawable/ic_time_24"
+                        app:drawableStartCompat="@drawable/ic_file_24"
                         app:layout_constraintEnd_toEndOf="parent"
                         app:layout_constraintStart_toStartOf="parent"
                         app:layout_constraintTop_toBottomOf="@+id/about_licenses"