Change: Switched to `mmh` as framework (wip)

Signed-off-by: Christian Roth <christian.roth@port17.de>
Change: Removed `app` from .gitignore in order to add the app

Signed-off-by: Christian Roth <christian.roth@port17.de>
Fix: Removed sensitive data

Signed-off-by: Christian Roth <christian.roth@port17.de>
Fix: Add setup config to gitignore