fix: changes for release

android/app/src/main/AndroidManifest.xml

@@ -3,7 +3,7 @@
     <application
         android:label="Seshat"
         android:name="${applicationName}"
-        android:icon="@mipmap/ic_launcher"
+        android:icon="@mipmap/launcher_icon"
         android:allowBackup="true"
         android:fullBackupContent="@xml/backup_rules">
         <activity

android/app/src/main/kotlin/com/example/seshat/MainActivity.kt

@@ -1,4 +1,4 @@
-package com.example.seshat
+package fr.ueauvergne.seshat
 
 import io.flutter.embedding.android.FlutterActivity