Refactored project structure, added multithreaded echo server and prime checking server, updated tests.

server00.h

@@ -0,0 +1,17 @@
+//
+// Created by Ajurna on 27/07/2025.
+//
+
+#ifndef MAIN_H
+#define MAIN_H
+
+#endif //MAIN_H
+#include <winsock2.h>
+#pragma once
+
+struct EchoArgs {
+    int connection;
+    SOCKET client;
+};
+
+void *echo(void *args);