Steering-Committee.md

+The CORSIKA 8 project is coordinated by the steering committee consisting of the following members (deputies):
+
+- Tim Huege <tim.huege@kit.edu\>: project coordination
+- Dominik Baack	(Alexander Sandrock): electromagnetic interactions
+- Tanguy Pierog	(Felix Riehn): hadronic interactions
+- Remy Prechelt	(Max Reininghaus): software development
+- Augusto Alves jr.: performance, parallelization
+- Lukas Nellen: deployment, continuous integration
+
+and with Ralf Ulrich as an honorary member.