Add library with Rust bindings to target_f1 code (#68)

* Move flipper-core into a workspace

* Fix target build rules

* Add flipper-f1-sys library

* Add flipper-f1-sys dependency to flipper-core

* Remove apparently useless includes

* Build and export HAL statics

* Disable Rust dependency detection for target_f1 build

* Install libclang-10-dev in docker

* Build Rust libs every time

* remove duplicate sources from make

* clean build different example

* wip add example fn

* Implement rust_uart_write()

* fix rebuild instructions for target_f1

Co-authored-by: aanper <mail@s3f.ru>

target_f1/Inc/usbd_conf.h

@@ -28,9 +28,6 @@
 #endif
 
 /* Includes ------------------------------------------------------------------*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
 #include "main.h"
 #include "stm32l4xx.h"
 #include "stm32l4xx_hal.h"