Add OSS licenses

mobile/src/main/java/be/mygod/vpnhotspot/SettingsPreferenceFragment.kt

@@ -22,6 +22,7 @@ import be.mygod.vpnhotspot.util.RootSession
 import be.mygod.vpnhotspot.util.launchUrl
 import be.mygod.vpnhotspot.util.showAllowingStateLoss
 import be.mygod.vpnhotspot.widget.SmartSnackbar
+import com.google.android.gms.oss.licenses.OssLicensesMenuActivity
 import com.google.android.material.snackbar.Snackbar
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
@@ -171,6 +172,10 @@ class SettingsPreferenceFragment : PreferenceFragmentCompat() {
             EBegFragment().showAllowingStateLoss(parentFragmentManager, "EBegFragment")
             true
         }
+        findPreference<Preference>("misc.licenses")!!.setOnPreferenceClickListener {
+            startActivity(Intent(context, OssLicensesMenuActivity::class.java))
+            true
+        }
     }
 
     override fun onDisplayPreferenceDialog(preference: Preference) {

mobile/src/main/res/drawable/ic_action_code.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0"
+        android:tint="?attr/colorControlNormal">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M9.4,16.6L4.8,12l4.6,-4.6L8,6l-6,6 6,6 1.4,-1.4zM14.6,16.6l4.6,-4.6 -4.6,-4.6L16,6l6,6 -6,6 -1.4,-1.4z"/>
+</vector>

mobile/src/main/res/xml/pref_settings.xml

@@ -88,5 +88,10 @@
             app:icon="@drawable/ic_action_card_giftcard"
             app:title="@string/settings_misc_donate"
             app:summary="@string/settings_misc_donate_summary"/>
+        <Preference
+            app:key="misc.licenses"
+            app:icon="@drawable/ic_action_code"
+            app:title="@string/oss_license_title"
+            app:summary="@string/preferences_license_summary"/>
     </PreferenceCategory>
 </PreferenceScreen>