Coding Platform

In the Coding page, we are using Repl.it for now, but it requires Sign-in to run any code.
And we don't want that.

So, there are two ways to resolve this:

- Either you can find a Coding Platform that doesn't require you to sign-in to run your code, but this may not compile every coding languages that we have in our list #3. So, you can find different coding platforms for different coding languages.
- Or you can find a coding platform that compiles every coding languages in our list and also doesn't require sign-in

Start by inspecting the Coding page and issue #3 to identify the supported languages and how Repl.it is integrated. Compare candidate coding platforms against the no-sign-in requirement and language coverage. Done means the selected platform or platforms run the listed languages without requiring users to sign in.

Written by the indexing model from the issue text.