add single toggle metric endpoint

lib/routes/metrics.js

@@ -24,6 +24,17 @@ module.exports = function (app, config) {
         res.json(metrics.getTogglesMetrics());
     });
 
+    app.get('/client/metrics/feature-toggles/:name', (req, res) => {
+        const name = req.params.name;
+        const data = metrics.getTogglesMetrics();
+        const lastHour = data.lastHour[name] || {};
+        const lastMinute = data.lastMinute[name] || {};
+        res.json({
+            lastHour,
+            lastMinute,
+        });
+    });
+
     app.post('/client/metrics', (req, res) => {
         const data = req.body;
         const clientIp = req.ip;