[Epic] Move the `Task` related methods

[Himangini]

Description

See comment here

(7~ methods) Tasks for creating/deleting stacks (returning a *tasks.TaskTree) e.g.NewTasksToCreateIAMServiceAccounts, NewTasksToDeleteIAMServiceAccounts, DeleteTasksForDeprecatedStacks

We need to

• Move the Task related methods out of here and into their respective pkg/actions/<resource-name> packages. Similar to how irsa/addon/karpenter/fargate all currently work

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 5 days.

[TiberiuGC]

Closing this issue as I've split the work into multiple tickets (#6961, #6962, #6963 and #6964) and updated estimations.