[FL-1196] Targets: add F6 (#427)

* Targets: add F6
* F6: Update linker script for use with internal storage
* F6: synchronize with F5, add all changes arriving in V9 board, update cube project. Github workflow: add multi-target build, add F6 to build targets.
* CI: fix full assembly
* CI: better artifact naming scheme
* CI: fix artifacts wildcard
* F6: Swap C10 - A15, vibro and sdcard detect pins

firmware/targets/f6/Inc/gpio.h

@@ -0,0 +1,49 @@
+/**
+  ******************************************************************************
+  * @file    gpio.h
+  * @brief   This file contains all the function prototypes for
+  *          the gpio.c file
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under Ultimate Liberty license
+  * SLA0044, the "License"; You may not use this file except in compliance with
+  * the License. You may obtain a copy of the License at:
+  *                             www.st.com/SLA0044
+  *
+  ******************************************************************************
+  */
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __GPIO_H__
+#define __GPIO_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* USER CODE BEGIN Private defines */
+
+/* USER CODE END Private defines */
+
+void MX_GPIO_Init(void);
+
+/* USER CODE BEGIN Prototypes */
+
+/* USER CODE END Prototypes */
+
+#ifdef __cplusplus
+}
+#endif
+#endif /*__ GPIO_H__ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/