feat: utils: linked_list: add const new

lib/utils/src/linked_list.rs

@@ -27,10 +27,7 @@ pub struct Link<T: LinkHelper> {
 
 impl<T: LinkHelper> Default for Link<T> {
     fn default() -> Self {
-        Self {
-            prev: Cell::new(None),
-            next: Cell::new(None),
-        }
+        Self::new()
     }
 }
 
@@ -44,6 +41,13 @@ impl<T: LinkHelper> Clone for Link<T> {
 }
 
 impl<T: LinkHelper> Link<T> {
+    pub const fn new() -> Self {
+        Self {
+            prev: Cell::new(None),
+            next: Cell::new(None),
+        }
+    }
+
     /// # Safety
     /// LINK_OFFSET must be a valid field offset of T
     pub unsafe fn object(&self) -> &T {