Add keywords to README

[evilkermit]

Summary of Changes

I'm trying to figure out how to make the examples more "searchable". I looked around a little bit but didn't find anything that I wanted to copy here. Instead, I've decided to get this started by adding keywords for each example. The idea is that the keywords should be general terminology for the types of things you can do in NOVA. I could use help with the following:

1. Does this look reasonable overall?
2. What keywords should be added to each example?

Checklist

• The PR has a clear and concise title
• Code is self-documented and follows style guidelines.
• Automated tests are written and pass successfully.
• Regression tests (e.g. manually triggered system tests, manual GUI/tool tests, ...) are performed to make sure the PR does not break anything (when applicable)
• Readme file is present and up-to-date.

Documentation Updates

Additional Notes

[SergeyYakubov]

1. I'd say it is fine. Maybe later we can add links to these examples in the documentation where we explain relevant concepts.
2. Maybe look at the keywords and see if it is clear what it means. E.g. Monaco Editor->Extended Editor. What is conditional?, ...

And ask @jarrah42 what he thinks.