Implement open() and close() for Usb class, added a lot of TODO's

inc/P700Driver.hpp

@@ -23,6 +23,7 @@ class P700Driver : public IDriver {
    private:
     std::shared_ptr<Usb> mUsbDriver{0};
     UsbDevice mUsbDev{0};
+    driver::info mInfo{};
 
     bool init();
 };