feat(http): implement HTTP server with CLI, request, response, and session

handling

src/http/http_server.hpp

@@ -0,0 +1,15 @@
+#pragma once
+
+#include "tcp_server_base.hpp"
+
+class HttpServer : public TcpServerBase
+{
+  public:
+    HttpServer(IoContext &io, unsigned short port, std::string rootDir);
+
+  protected:
+    void createSession(TcpSocket socket) override;
+
+  private:
+    std::string rootDir_;
+};