feature: add devpts fd wrapper (#21)

This feature is intended to resolve devpts problem.

kernel/selinux/selinux.h

@@ -19,7 +19,7 @@ bool is_zygote(const struct cred* cred);
 
 void apply_kernelsu_rules();
 
-u32 ksu_get_devpts_sid();
+u32 ksu_get_ksu_file_sid();
 
 int handle_sepolicy(unsigned long arg3, void __user *arg4);