[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/api-hal/api-hal-task.h

@@ -0,0 +1,12 @@
+#pragma once
+#include "main.h"
+#include <cmsis_os2.h>
+#include <stdbool.h>
+
+// Task stack size in bytes
+#define DEFAULT_STACK_SIZE 4096
+
+// Max system tasks count
+#define MAX_TASK_COUNT 14
+
+bool task_is_isr_context(void);