Added put, patch for user

src/routers/user.js

 const router = new express.Router()
 const app = express()
 
-// app.get('/users', async (req, res) => {
+// router.get('/users', async (req, res) => {
 //     try{
 //         console.log('Users hit successfully!')
 //         const allUsers = await User.find({})
 //     }
 // })
 
-app.get('/users', (req, res) => {
+router.get('/users', (req, res) => {
     try {
         if (Object.entries(req.params).length === 0) {
             res.status(200).send('getting all users')
     }
 })
 
-app.get('/users/:id', (req, res) => {
+router.get('/users/:id', (req, res) => {
     try {
         if (req.params.id) {
             //get by Id
     }
 })
 
-app.post('/users', (req, res) => {
+router.post('/users', (req, res) => {
     try {
         if (Object.entries(req.body).length !== 0) {
             //create user
     }
 })
 
-app.delete('/users/:id', (req, res) => {
+
+router.put('/users', (req, res) => {
+    userFound = false
+    try {
+        if (Object.entries(req.body).length == 0) {
+            return res.status(400).send('invalid input parameters')
+        }
+        if (!userFound) {
+            return res.status(404).send('user not found')
+        }
+        return res.status(200).send('user updated successfully')
+    } catch (e) {
+        return res.status(500).send(e)
+    }
+})
+
+router.patch('/users/:id/contacts', (req, res) => {
+    try {
+        userFound = true
+        if (!userFound) {
+            return res.status(404).send('user not found')
+        }
+        if (Object.entries(req.body).length == 0) {
+            return res.status(400).send('invalid input parameters')
+        }
+        return res.status(200).send('user contacts updated successfully')
+    } catch (e) {
+        return res.status(500).send(e)
+    }
+})
+
+router.delete('/users/:id', (req, res) => {
     try {
         if (req.params.id) {
             //get by Id