feat(saving): Use kryo for serialization

This will probably be more expanded in future. But for now this approach
works without some major issues. But ofc things like data migration etc
doesn't work.

pom.xml

@@ -128,11 +128,16 @@
             <artifactId>logback-classic</artifactId>
             <version>1.5.18</version> <!-- latest at the time -->
         </dependency>
-<dependency>
-    <groupId>com.github.trilarion</groupId>
-    <artifactId>java-vorbis-support</artifactId>
-    <version>1.2.1</version>
-</dependency>
+        <dependency>
+          <groupId>com.github.trilarion</groupId>
+          <artifactId>java-vorbis-support</artifactId>
+          <version>1.2.1</version>
+        </dependency>
+        <dependency>
+           <groupId>com.esotericsoftware</groupId>
+           <artifactId>kryo</artifactId>
+           <version>5.6.2</version>
+        </dependency>
     </dependencies>
 
 </project>