Major classes refactoring and code cleanup

app/src/main/AndroidManifest.xml

@@ -12,7 +12,7 @@
     <uses-permission android:name="android.permission.INTERNET" />
 
     <application
-        android:name=".presentation.MainApplication"
+        android:name=".MainApplication"
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
         android:fullBackupContent="@xml/backup_rules"
@@ -24,7 +24,7 @@
         android:theme="@style/Theme.Look4Sat.Main"
         tools:targetApi="31">
         <activity
-            android:name=".presentation.MainActivity"
+            android:name=".MainActivity"
             android:exported="true"
             android:theme="@style/Theme.Look4Sat.SplashScreen">
             <intent-filter>