bin2array to dynamically create C array on build

resources/AsyncWebSerial/src/AsyncWebSerial.h

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+/**
+ * @file AsyncWebSerial.h
+ * @brief A web serial interface for the ESP32 microcontroller.
+ * @license MIT License (https://opensource.org/licenses/MIT)
+ */
+
+#ifndef AsyncWebSerial_h
+#define AsyncWebSerial_h
+
+#include <Arduino.h>
+#include <AsyncTCP.h>
+#include <ESPAsyncWebServer.h>
+#include <WiFi.h>
+#include <stdlib_noniso.h>
+
+#include <functional>
+
+// define the callable object type for the message received callback
+typedef std::function<void(uint8_t *data, size_t len)> WSMessageCallback;
+typedef std::function<void(const String &msg)> WSStringMessageCallback;
+
+class AsyncWebSerial : public Print
+{
+  public:
+    void begin(AsyncWebServer *server, const char *url = "/webserial");
+
+    void setAuthentication(const String &username, const String &password);
+    void onMessage(WSMessageCallback callback);
+    void onMessage(WSStringMessageCallback callback);
+
+    void loop();
+
+    // Print interface implementation
+    virtual size_t write(uint8_t) override;
+    virtual size_t write(const uint8_t *buffer, size_t size) override;
+
+  private:
+    AsyncWebServer *_server;
+    AsyncWebSocket *_socket;
+    bool _isAuthenticationRequired = false;
+    String _username;
+    String _password;
+
+    WSMessageCallback _onMessageReceived           = nullptr;
+    WSStringMessageCallback _stringMessageCallback = nullptr;
+};
+
+#endif // AsyncWebSerial_h