move wifi/ml307 to boards folder

main/boards/ml307_board.h

@@ -0,0 +1,23 @@
+#ifndef ML307_BOARD_H
+#define ML307_BOARD_H
+
+#include "board.h"
+#include <ml307_at_modem.h>
+
+class Ml307Board : public Board {
+protected:
+    Ml307AtModem modem_;
+
+    virtual std::string GetBoardJson() override;
+    void StartModem();
+
+public:
+    Ml307Board();
+    virtual void Initialize() override;
+    virtual void StartNetwork() override;
+    virtual Http* CreateHttp() override;
+    virtual WebSocket* CreateWebSocket() override;
+    virtual bool GetNetworkState(std::string& network_name, int& signal_quality, std::string& signal_quality_text) override;
+};
+
+#endif // ML307_BOARD_H