establish the "Glossary" as foundation for examination questions

[gernotstarke]

When creating and discussing examination questions, we should always provide the corresponding terminology and/or references in the glossary.

[skogsbaer]

#534 adds links to the glossary for LG-{1,2,3}

[skogsbaer]

#534 was the easy part. Here are some terms from LG-{1,2,3} that should probably be in the glossary, but currently are not:

• [ ] functional requirements
• [ ] product owner
• [ ] requirment engineer
• [ ] quality assurance
• [ ] data models
• [ ] Conveys law (with reference)
• [ ] Goodhart's law
• [x] KISS
• [x] YAGNI
• [ ] CUPID
• [ ] Postel's law

Right now, I don't have the time to continue, so I just leave it as a todo list.

[sippsack]

I created a term for YAGNI and KISS in the glossary, see

https://github.com/isaqb-org/glossary/pull/210 https://github.com/isaqb-org/glossary/pull/211