Add: ListUsersParser to parse request

src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/list_users/ListUsersParser.java

@@ -0,0 +1,11 @@
+package ch.unibas.dmi.dbis.cs108.casono.server.app.commands.list_users;
+
+import ch.unibas.dmi.dbis.cs108.casono.server.network.command.parsing.CommandParser;
+import ch.unibas.dmi.dbis.cs108.casono.server.network.protocol.request.PrimitiveRequest;
+
+public class ListUsersParser implements CommandParser<ListUsersRequest> {
+    @Override
+    public ListUsersRequest parse(PrimitiveRequest primitiveRequest) {
+        return new ListUsersRequest(primitiveRequest.context());
+    }
+}