feat(about): add license text in a bottom sheet in about

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

@@ -0,0 +1,26 @@
+<!--
+  ~ Copyright (c) 2025 Nishant Mishra
+  ~
+  ~ This file is part of Tomato - a minimalist pomodoro timer for Android.
+  ~
+  ~ Tomato is free software: you can redistribute it and/or modify it under the terms of the GNU
+  ~ General Public License as published by the Free Software Foundation, either version 3 of the
+  ~ License, or (at your option) any later version.
+  ~
+  ~ Tomato is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
+  ~ the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+  ~ Public License for more details.
+  ~
+  ~ You should have received a copy of the GNU General Public License along with Tomato.
+  ~ If not, see <https://www.gnu.org/licenses/>.
+  -->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#e3e3e3"
+        android:pathData="M200,760h400q17,0 28.5,11.5T640,800q0,17 -11.5,28.5T600,840L200,840q-17,0 -28.5,-11.5T160,800q0,-17 11.5,-28.5T200,760ZM329,589L216,476q-23,-23 -23.5,-56.5T215,363l29,-29 228,226 -29,29q-23,23 -57,23t-57,-23ZM640,392L414,164l29,-29q23,-23 56.5,-22.5T556,136l113,113q23,23 23,57t-23,57l-29,29ZM796,772L302,278l56,-56 494,494q11,11 11,28t-11,28q-11,11 -28,11t-28,-11Z" />
+</vector>

app/src/main/res/values/strings.xml

@@ -102,4 +102,5 @@
     <string name="rate_on_google_play_desc">Liked the app? Write a review!</string>
     <string name="bmc_desc">Support me with a small donation</string>
     <string name="tomato_plus_desc">Customize further with Tomato+</string>
+    <string name="license">License</string>
 </resources>