Add a very silly ls

crates/nu-protocol/src/value/mod.rs

@@ -278,6 +278,13 @@ impl Value {
         Ok(current)
     }
 
+    pub fn string(s: &str, span: Span) -> Value {
+        Value::String {
+            val: s.into(),
+            span,
+        }
+    }
+
     pub fn is_true(&self) -> bool {
         matches!(self, Value::Bool { val: true, .. })
     }