added get endpoint, updated state_management

src/errors.rs

@@ -11,7 +11,7 @@ pub enum InvalidCommand {
     #[error("Invalid params")]
     InvalidParams,
     #[error("Not enough bytes in the name's hash")]
-    OutputTooShort,
+    InvalidOutputLength,
     #[error("Error decoding the values: {0}")]
-    NameDecodingError(#[from] base64::DecodeSliceError),
+    NameDecodingError(#[from] base64::DecodeError),
 }