Add more from the std

crates/std/src/thread.rs

@@ -0,0 +1,13 @@
+pub use crate::sys::thread::*;
+
+pub struct ThreadInit {
+    pub handle: Thread,
+    pub rust_start: Box<dyn FnOnce() + Send>,
+}
+impl ThreadInit {
+    /// Initialize the 'current thread' mechanism on this thread, returning the
+    /// Rust entry point.
+    pub fn init(self: Box<Self>) -> Box<dyn FnOnce() + Send> {
+        todo!()
+    }
+}