Remove deprecated classes and static singleton-based architecture

pom.xml

@@ -12,7 +12,7 @@
     <packaging>jar</packaging>
 
     <properties>
-        <main.class>me.bobert.netneutrality.NetNeutrality</main.class>
+        <main.class>me.bobert.netneutrality.App</main.class>
         <java.version>25</java.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <maven.compiler.source>25</maven.compiler.source>