refactor: use macros for TransactionError

Author: reez

bdk-ffi/src/bdk.udl

@@ -4,17 +4,6 @@ namespace bdk {};
 // bdk crate - error module
 // ------------------------------------------------------------------------
 
-[Error]
-interface TransactionError {
-  Io();
-  OversizedVectorAllocation();
-  InvalidChecksum(string expected, string actual);
-  NonMinimalVarInt();
-  ParseFailed();
-  UnsupportedSegwitFlag(u8 flag);
-  OtherTransactionErr();
-};
-
 // ------------------------------------------------------------------------
 // bdk_wallet crate - types module
 // ------------------------------------------------------------------------

bdk-ffi/src/error.rs

@@ -745,7 +745,7 @@ pub enum SignerError {
     Psbt { error_message: String },
 }
 
-#[derive(Debug, thiserror::Error)]
+#[derive(Debug, thiserror::Error, uniffi::Error)]
 pub enum TransactionError {
     #[error("io error")]
     Io,

bdk-ffi/src/lib.rs

@@ -13,8 +13,6 @@ mod wallet;
 
 use crate::bitcoin::FeeRate;
 use crate::bitcoin::OutPoint;
-use crate::bitcoin::Script;
-use crate::error::TransactionError;
 
 use bdk_wallet::bitcoin::Network;