Migrate contributing READMEs to GitHub wiki #914
Description
Those contributor help pages exist, but they lack visibility. Maybe migrating them to the wiki, might help.
Beside moving the content it's expected to test the docs and adjust them accordingly to current status
- https://github.com/geokrety/geokrety-website/blob/main/CONTRIBUTING.md
- https://github.com/geokrety/geokrety-website/blob/main/CONTRIBUTING.label-templates.md
- https://github.com/geokrety/geokrety-website/blob/main/tests-qa/README.md
- https://github.com/geokrety/geokrety-website/blob/main/website/db/TESTING-DATABASE.md