feat: sendCoins error handling

lib/plugins/wallet/galoy/galoy.js

@@ -171,7 +171,14 @@ function sendCoins (account, tx, settings, operatorId) {
       return sendFundsOnChain(wallet.id, toAddress, cryptoAtoms, account.authToken)
     })
     .then(result => {
-      return result
+      switch (result.status) {
+        case 'ALREADY_PAID':
+          throw new Error('Transaction already exists!')
+        case 'FAILURE':
+          throw new Error('Transaction failed!')
+        default:
+          return '<galoy transaction>'
+      }
     })
     .catch(err => {
       throw err