[wip] added amplitude helper

firmware/shared_libs/controllers/ctrl_channel_button.c

@@ -1,6 +1,5 @@
 #include "main.h"
 #include "hw_button.h"
-#include "ctrl_button.h"
 #include "ctrl_channel_button.h"
 
 #define DUMMY_GPIO_Port GPIOA
@@ -61,4 +60,9 @@ void CTRL_channelButtonsHandler(void)
     {
         buttonHandler(&channel_buttons[btn_key]);
     }
+}
+
+__weak void CTRL_pushedChanBtnEvent(ButtonKey_t *key)
+{
+    UNUSED(key);
 }