chore: add helper for encoded (#12868)

crates/primitives-traits/src/encoded.rs

@@ -1,3 +1,4 @@
+use alloy_eips::eip2718::Encodable2718;
 use alloy_primitives::Bytes;
 
 /// Generic wrapper with encoded Bytes, such as transaction data.
@@ -17,8 +18,8 @@ impl<T> WithEncoded<T> {
     }
 
     /// Get the encoded bytes
-    pub fn encoded_bytes(&self) -> Bytes {
-        self.0.clone()
+    pub const fn encoded_bytes(&self) -> &Bytes {
+        &self.0
     }
 
     /// Get the underlying value
@@ -47,6 +48,13 @@ impl<T> WithEncoded<T> {
     }
 }
 
+impl<T: Encodable2718> WithEncoded<T> {
+    /// Wraps the value with the [`Encodable2718::encoded_2718`] bytes.
+    pub fn from_2718_encodable(value: T) -> Self {
+        Self(value.encoded_2718().into(), value)
+    }
+}
+
 impl<T> WithEncoded<Option<T>> {
     /// returns `None` if the inner value is `None`, otherwise returns `Some(WithEncoded<T>)`.
     pub fn transpose(self) -> Option<WithEncoded<T>> {