Fixing protocol inheritance

[IgorMaineti]

What's in this pull request?

Implementing a checker to see if the protocol isn't inheriting a swift keyword/type alias.

Does this resolve an open issue?

No

Checklist for submitting a pull request:

• [x] Your code builds without any errors or warnings (warnings when running prepareForBootstrapTests.sh are OK).
• [x] You ran the unit tests and Bootstrapping tests for your platform.
  • [ ] If you changed any .kt files in the Test cases folder, you also ran the Acceptance tests.
• [ ] You have added new tests that check your changes (if possible).
• [x] This pull request is targeting the development branch (if you're contributing code) or the gh-pages branch (if you're contributing to the website).

[vinivendra]

Hi @IgorMaineti, thanks for opening this. I'll try to take a look in the weekend, OK? Feel free to ping me if I forget.

[vinivendra]

This looks great (like the kind of thing that should have been there from the beginning). Thanks for the PR 😄