Patch sched rust (#139)

* update

* 添加rt调度器的rust初步实现

* 完善rt调度逻辑

* 调试rt调度器

* 修改sched的返回值

* cargo fmt 格式化

* 删除无用代码，修补rt bug

* 删除无用的代码，和重复的逻辑

* 软中断bugfix

* 删除一些代码

* 添加kthread_run_rt文档

* 解决sphinix警告_static目录不存在的问题

Co-authored-by: longjin <longjin@RinGoTek.cn>

kernel/src/process/process.rs

@@ -2,9 +2,7 @@ use core::ptr::{read_volatile, write_volatile};
 
 use crate::{
     arch::asm::current::current_pcb,
-    include::bindings::bindings::{
-        process_control_block, PROC_RUNNING, PROC_STOPPED,
-    },
+    include::bindings::bindings::{process_control_block, PROC_RUNNING, PROC_STOPPED},
     sched::core::{cpu_executing, sched_enqueue},
     smp::core::{smp_get_processor_id, smp_send_reschedule},
 };