refactor: add publicKeyRaw method to ed25519

src/ed25519.ts

@@ -12,10 +12,14 @@ export default class KeyPairEd25519 {
   public get publicKey(): Uint8Array {
     return concatBytes(
       Uint8Array.from([CID_HASH_TYPES.ED25519]),
-      ed25519.getPublicKey(this._bytes),
+      this.publicKeyRaw,
     );
   }
 
+  public get publicKeyRaw(): Uint8Array {
+    return ed25519.getPublicKey(this._bytes);
+  }
+
   public extractBytes(): Uint8Array {
     return this._bytes;
   }