Define rules for the usage of our logo

[OliverFendt]

We need to define clear rules, which specify under which conditions our logo can be used. @zvr @misappi @blaumeiser-at-bosch @mcjaeger and others please comment and provide input

[andreas-bauer]

Here is an example of how Kubernetes defined their usage guidelines, which itself are based on the "The Linux Foundation Trademark Usage Guidelines".

Certain marks of The Linux Foundation have been created to enable you to communicate compatibility or interoperability of software or products. In addition to the requirement that any use of a mark to make an assertion of compatibility must, of course, be accurate, the use of these marks must avoid confusion regarding The Linux Foundation’s association with the product. The use of the mark cannot imply that The Linux Foundation or its projects are sponsoring or endorsing the product.

Links: Kubernetes and Linux Foundation

This could be used as inspiration for own rules.