add second masked DB dump

[Gummibeer]

Add a second masked DB dump that can be used for local development and can also be shared to contributors.

https://beyondco.de/docs/laravel-masked-db-dump/installation

[scrlkx]

Are we able to setup a local environment without this? Reading the current instructions I still don't know how to have some local data to work.

[Gummibeer]

I could anonymize a dump and upload it. Will try to get it done till tomorrow.

[scrlkx]

Let me know if you need any help here.