Add WASM getters to TransactionUnspentOutput (#341)

Fixes #338

Author: rooooooooob

chain/wasm/src/builders/tx_builder.rs

@@ -40,6 +40,14 @@ impl TransactionUnspentOutput {
  )
  .into()
  }
+
+ pub fn input(&self) -> TransactionInput {
+ self.0.input.clone().into()
+ }
+
+ pub fn output(&self) -> TransactionOutput {
+ self.0.output.clone().into()
+ }
 }
 
 #[wasm_bindgen]