feat: Allow configuring the topology spread constraints in the Helm chart

[praneetloke]

Is your feature request related to a problem? Please describe.

It is currently not possible to specify topology spread constraints for the webapp and supervisor pods, as well as for the jobs started by the worker.

Describe the solution you'd like to see

topologySpreadConstraints should be configurable similar to nodeSelector.

Describe alternate solutions

N/A

Additional information

https://kubernetes.io/docs/concepts/scheduling-eviction/topology-spread-constraints/

[nicktrn]

Hope this helps!

[praneetloke]

Thank you for such a quick turnaround, @nicktrn!