add missing file

src/lib/monitor-record.js

+const {Record} = require('immutable');
+
+const MonitorRecord = Record({
+    id: null,
+    label: null,
+    value: null,
+    category: null,
+    color: null,
+    x: null,
+    y: null
+});
+
+module.exports = MonitorRecord;