chore: experiment files for adaptive threshold mechanism

This commit also includes various fixes to the parallel controller that came to light while running the experiments.

config/controller/parallel_swarm2.yaml

+name: psl
+_target_: edml.controllers.parallel_split_controller.ParallelSplitController
+_partial_: true
+scheduler:
+  _target_: edml.controllers.scheduler.sequential.SequentialNextServerScheduler