reorganized and added aerpawlib submodule

aerpaw/impl/controller_main.cpp

@@ -0,0 +1,16 @@
+#include <iostream>
+#include "controller.h" 
+#include "controller_impl.h" // TCP implementation header
+
+int main() {
+    // Number of clients to handle
+    int numClients = 2;  // for now
+
+    std::cout << "Initializing TCP server...\n";
+
+    // Call MATLAB-generated server function
+    controller(numClients);
+
+    std::cout << "Server finished.\n";
+    return 0;
+}