新增rust ffi (#77)

* 引入cargo

* 取消对Cargo.lock的跟踪

* 解决vscode报错问题

* new: rust的代码能够调用c语言的printk_color

* 1、将原本run.sh的工作拆解，变为几个不同的make命令
2、在docker镜像中编译rust

* 更改workflow

* update workflow

* new: 解决workflow无法通过编译的问题

kernel/src/common/stdio.h

@@ -0,0 +1,13 @@
+#pragma once
+#include <stdarg.h>
+#include <common/printk.h>
+
+#define	SEEK_SET	0	/* Seek relative to start-of-file */
+#define	SEEK_CUR	1	/* Seek relative to current position */
+#define	SEEK_END	2	/* Seek relative to end-of-file */
+
+#define SEEK_MAX	3
+
+extern int vsprintf(char *buf, const char *fmt, va_list args);
+
+extern int sprintk(char *buf, const char *fmt, ...);