feat: add lamassu bumpfee script

lib/blockexplorers/mempool.space.js

@@ -1,8 +1,16 @@
-const axios = require("axios");
-
-const getSatBEstimateFee = () => {
-  return axios.get('https://mempool.space/api/v1/fees/recommended')
-    .then(r => r.data.hourFee)
-}
-
-module.exports = { getSatBEstimateFee }
+const axios = require("axios");
+
+const getSatBEstimateFee = () => {
+  return axios.get('https://mempool.space/api/v1/fees/recommended')
+    .then(r => r.data.hourFee)
+}
+
+const getSatBEstimateFees = () => {
+  return axios.get('https://mempool.space/api/v1/fees/recommended')
+    .then(r => r.data)
+}
+
+module.exports = {
+  getSatBEstimateFees,
+  getSatBEstimateFee
+}

lib/plugins/wallet/bitcoind/bitcoind.js

@@ -219,5 +219,6 @@ module.exports = {
   sendCoinsBatch,
   checkBlockchainStatus,
   getTxHashesByAddress,
+  fetch,
   SUPPORTS_BATCHING
 }