Add comparison API endpoints

lib/www/server/api/middleware/comparisons/groups/get.js

@@ -0,0 +1,20 @@
+const comparisons = require('../../../../lib/comparisons');
+
+
+module.exports = async function (req, res, next) {
+
+	try {
+		// const data = await comparisons.groups()
+		// if (data?.[req.params.group]) {
+		const data = await comparisons.getGroup(req.params.group);
+		if (data) {
+			res.status(200).send(data);
+		} else {
+			res.status(404).send({message: "Group does not exist"});
+		}
+		return next();
+	} catch (err) {
+		next(err);
+	}
+
+};