feat: Create user controller

see: #10

server/controller/user.ctrl.js

@@ -0,0 +1,38 @@
+const User = require("./../models/User")
+const InputAudio = require("./../models/InputAudio")
+
+module.exports = {
+	addUser: (req, res, next) => {
+		new User(req.body).save((err, newUser) => {
+			if (err)
+				res.send(err)
+			else if (!newUser)
+				res.send(400)
+			else
+				res.send(newUser)
+			next()
+		})
+	},
+
+	getUser: (req, res, next) => {
+		User.findById(req.params.id).then((err, user) => {
+			if (err)
+				res.send(err)
+			else if (!user)
+				res.send(404)
+			else
+				res.send(user)
+			next()
+		})
+	},
+
+	getUserProfile: (req, res, next) => {
+		User.findById(req.params.id).then(_user => {
+			return InputAudio.find({"author": req.params.id}).then((_audios) =>
+				res.json({user: _user, inputAudios: _audios})
+			)
+		}).catch((err) => console.log(err))
+	}
+}
+
+