Implemented UART_CTRL Interface (missing Hardware implementation)

i2c-hub/firmware/i2c-hub-firmware/src/gobotrpc/include/uart_ctrl_hardware.hpp

@@ -0,0 +1,8 @@
+#pragma once
+typedef void (*UART_CTRL_Callback_RX)(void * args, char * data, size_t length);
+
+class I_UART_CTRL_Hardware_Handler {
+public:
+    virtual void send(char * data, size_t length) = 0;
+    virtual void registerCallback(UART_CTRL_Callback_RX) = 0;
+};