Merge branch 'fraccaman/sdk-builder-fix' (#3518)

* fraccaman/sdk-builder-fix:
  changelog: add #3518
  sdk: add impl to shielded transfer
  sdk: add impl to shielding transfer

.changelog/unreleased/bug-fixes/3518-sdk-builder-fix.md

@@ -0,0 +1,2 @@
+- Adds SDK builder to shielded and shielding transfers.
+  ([\#3518](https://github.com/anoma/namada/pull/3518))

crates/sdk/src/args.rs

@@ -339,6 +339,18 @@ pub struct TxShieldedTransfer<C: NamadaTypes = SdkTypes> {
     pub tx_code_path: PathBuf,
 }
 
+impl<C: NamadaTypes> TxBuilder<C> for TxShieldedTransfer<C> {
+    fn tx<F>(self, func: F) -> Self
+    where
+        F: FnOnce(Tx<C>) -> Tx<C>,
+    {
+        TxShieldedTransfer {
+            tx: func(self.tx),
+            ..self
+        }
+    }
+}
+
 impl TxShieldedTransfer {
     /// Build a transaction from this builder
     pub async fn build(
@@ -373,6 +385,18 @@ pub struct TxShieldingTransfer<C: NamadaTypes = SdkTypes> {
     pub tx_code_path: PathBuf,
 }
 
+impl<C: NamadaTypes> TxBuilder<C> for TxShieldingTransfer<C> {
+    fn tx<F>(self, func: F) -> Self
+    where
+        F: FnOnce(Tx<C>) -> Tx<C>,
+    {
+        TxShieldingTransfer {
+            tx: func(self.tx),
+            ..self
+        }
+    }
+}
+
 impl TxShieldingTransfer {
     /// Build a transaction from this builder
     pub async fn build(