Add: ResponseNode and implementations to store body of response

src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/network/response/ResponseBlock.java

@@ -0,0 +1,5 @@
+package ch.unibas.dmi.dbis.cs108.casono.server.network.response;
+
+import java.util.List;
+
+public record ResponseBlock(String tag, List<ResponseNode> children) implements ResponseNode {}

src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/network/response/ResponseNode.java

@@ -0,0 +1,3 @@
+package ch.unibas.dmi.dbis.cs108.casono.server.network.response;
+
+public interface ResponseNode {}

src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/network/response/ResponseParameter.java

@@ -0,0 +1,7 @@
+package ch.unibas.dmi.dbis.cs108.casono.server.network.response;
+
+public record ResponseParameter(String key, Object value) implements ResponseNode {
+    public String rawValue() {
+        return value.toString();
+    }
+}