Adding Multer Middleware and Cloudinary Utility

[MOHINI1403]

Description :

In response to the issue assigned for adding the multer middleware and writing the cloudinary utility I have attached the code . Issue No : #19
Important Points

Addition of the Multer Middleware

1. This contains the code mentioning how the directory created for local storage of the uploaded files giving them unique name via const uniqueSuffix=Date.now()+"-"+Math.round(Math.random()*1e9);
2. Configuring diskStorage() which is used to handle file uploads in Node.js.
3. Each uploaded file will have a unique filename based on the form field name and a combination of the current timestamp and a random number. This prevents overwriting files with the same name.

Addition of the Cloudinary Utility

1. A utility function that uploads files on Cloudinary from local storage and and removing them from the local file system after a successful upload.
2. Cloudinary Configuration : You need to make an account on cloudinary
   
   From here you are create a new key : Remember the cloudinary_cloud_name : Product Environment:
3. After this a function that uploads the files on cloudinary and then returns the cloudinary url which could be stored in DB

I am contributing this under GSsOC-Ext . Please consider the PR .

[sudo-dpkg]

@MOHINI1403
Please resolve the merge conflicts and thoroughly test your changes before submitting a pull request.

[MOHINI1403]

done