Add InnerSource Principles as example to explicit-innersource-principles

[gruetter]

Similar to what @MaineC reported for Europace in the explicit-innersource-principles Pattern, we at Bosch also used a set of principles to guide our work.

• Explain why Bosch adopted InnerSource in Known Instances section
• Explain which principles we had and how they helped achieve our goal. Esp Meritocracy
• Add BIOS Logo and values