syslog: restructure code

syslog/service.js

@@ -0,0 +1,16 @@
+#!/usr/bin/env node
+
+'use strict';
+
+const server = require('./server.js');
+
+const options = {
+    logFolder: process.argv[2] || '/home/yellowtent/platformdata/logs',
+    port: 2514
+};
+
+async function main() {
+    await server.start(options);
+}
+
+main();