dynamic scheduler: extract scheduling logic and move it away from director-v2

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Functionality to move to dynamic-scheduler

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1. requirement: add dual scheduling (via director-v2 and via dynamic-scheduler) #6891
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2. requirement: reroute director-v2 service calls via dynamic-scheduler from webserver #6894
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3. requirement: add API endpoints to director-v2 for creating/removing (docker services & docker networks)
4. requirement: add director-v0 client to dynamic-scheduler
5. requirement: add postgres database client to dynami-scheduler (project networks and workbench node checks, maybe more)
6. port service start
7. port service stop
8. Experiment with the new scheduler and ensure it performs as requested
9. Happy with new scheduler? -> remove old code form director-v2