Adding Tutorial Steps

[egekorkan]

After the comment of @relu91 at #209 (comment), I thought it would be good to put some "tasks" like last steps of the tutorials. Just doing it on the website with "hidable" answers should be fine. Any opinons?

[egekorkan]

There are some examples:

• https://dev.to/efkumah/easy-steps-to-create-an-expressjs-application-3gb8
• https://w3c.github.io/wot-cg/tutorials/whatiswot/docs/preliminary/json/practice#practice-exercise