14 Main menu screen setup

Affected classes: TankWarsGame, MainMenuScreen, MainMenuController, MenuButton

Altered screenOrientation from "landscape" to "fullSensor" in the android manifests file

Added libGDX Freetype Gradle dependency to get crisper fonts.

Potential problems:

• Is not adapted to android landscape mode, only portrait
• Screen gets black bars for certain aspect ratios as background image is not positioned optimally
• Updated Gradle, may be collisions

Issue #14 (closed)

Closes #14 (closed)

frontend/android/AndroidManifest.xml

@@ -16,7 +16,7 @@
         <activity
             android:name="com.game.tankwars.AndroidLauncher"
             android:label="@string/app_name" 
-            android:screenOrientation="landscape"
+            android:screenOrientation="fullSensor"
             android:configChanges="keyboard|keyboardHidden|navigation|orientation|screenSize|screenLayout"
             android:exported="true">
             <intent-filter>