WIP: make scheduler state available in eventcontext and add timing feature

OBSOLETE: to be split into smaller MRs

made the node + algorithm states available in the evtcontext to be able to access the information in a monitoring algorithm. Also a prototype "decreportswriter" will be introduced using the information in the evtcontext extension.

added a feature to define when to start and stop the timing process + some on-the-fly minichanges.

@graven @chasse FYI