Remove the shim kernel crate

kernel/src/process/term_status.rs

@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: MPL-2.0
+
+use super::signal::sig_num::SigNum;
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum TermStatus {
+    Exited(u8),
+    Killed(SigNum),
+}
+
+impl TermStatus {
+    /// Return as a 32-bit integer encoded as specified in wait(2) man page.
+    pub fn as_u32(&self) -> u32 {
+        match self {
+            TermStatus::Exited(status) => (*status as u32) << 8,
+            TermStatus::Killed(signum) => signum.as_u8() as u32,
+        }
+    }
+}