Adding "config.properties" and sort+remove duplicate

[drego85]

More info about "config.properties" https://twitter.com/momika233/status/1667906124841091072

Description

What will it do?

If this PR will fix an issue, please address it: Fix #{issue}

Requirements

• [ ] Add your name to CONTRIBUTERS.md
• [ ] If this is a new feature, then please add some additional information about it to CHANGELOG.md

[maurosoria]

How is everything?

[drego85]

Ciao Mauro, sorry for the delay!

All is well ;) hope you too!