Added support allowhighfee in sendrawtransaction by v0.9.1

Signed-off-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>

esplora.c

@@ -591,9 +591,15 @@ static struct command_result *
 sendrawtransaction(struct command *cmd, const char *buf, const jsmntok_t *toks)
 {
 	const char *tx;
-
+  //FIXME(vincenzopalazzo) This propriety is added in the version 0.9.1
+  //We can try to give a meaning at this propriety, for the moment
+  //it is only a fix to walk around the param method error
+  bool *allowhighfees;
 	/* bitcoin-cli wants strings. */
-	if (!param(cmd, buf, toks, p_req("tx", param_string, &tx), NULL))
+	if (!param(cmd, buf, toks,
+             p_req("tx", param_string, &tx),
+             p_opt_def("allowhighfees", param_bool, &allowhighfees, false),
+             NULL))
 		return command_param_failed();
 
 	plugin_log(cmd->plugin, LOG_INFORM, "sendrawtransaction");