Feat/api

[BVasquez07]

• Added api directory which uses node + express to fetch from the leetcode api
• To start the server and fetch from it simply run npm start
• once done go to the URL it is being served on which should be this
• the routes currently implemented are

1. user data
2. user solved
3. user submissions

To check your profile try this in the URL strings http://127.0.0.1:3060/user?user=yourUserHere