feat: modification and deletion admin routes

[Rizzy-2005]

I have added admin routes for:

• Changing the end-user isActive and soft-deleting end-users (PATCH /users/:userId, DELETE /users/:userId)
• Updating and soft-deleting organizations (PATCH /organizations/:id, DELETE /organizations/:id)
• Updating and soft-deleting venues (PATCH /venues/:id, DELETE /venues/:id)
• Updating event categories (PATCH /event-categories/:id)
• Updating and soft-deleting event types (PATCH /event-types/:id, DELETE /event-types/:id)
• Updating and soft-deleting workflow templates (PATCH /workflow-templates/:templateId, DELETE /workflow-templates/:templateId)
• Updating and soft-deleting workflow template steps (PATCH /workflow-templates/:templateId/steps/:stepId, DELETE /workflow-templates/:templateId/steps/:stepId)

Major things to be noticed:

• Soft-deletion for Organizations (DELETE /organizations/:id) with child sub-organization guards (409 Conflict), cascading soft-deletions across managed_entity, member user_roles, and draft/pending hosted events, while revoking pending co-host invitations.
• Soft-deletion for Venues (DELETE /venues/:id), cascading soft-deletions across managed_entity, member user_roles, and active venue_allotment records, alongside event-facility with venue-allotments cleanup.
• Soft-deletion for Workflow Template Steps (DELETE /workflow-templates/:id/steps/:stepId) with automatic linked-list chain re-linking (initialStepId or prevStep.nextStepId repointing) and cascade soft-deletion of associated step roles.

Major fix:

• When someone takes over a role (like HoD), we now automatically transfer their pending approval tasks to the new person so events don't get blocked. When roles are updated in assignOrganizationMemberRoles or assignVenueMemberRoles, the transaction automatically finds any replaced role IDs and updates all matching pending step assignments in workflow_instance_step_assignment to the new member's role ID.(only for pending)

All the routes are tested except the workflow-template, workflow-template-steps, and the major fix. I am doing the tests for this currently.

[dcdunkan]

Facility handling logic was adjusted to reflect the current facility implementation. Also, the upstream doesn't have any methods for editing/deleting the new implementation of facilities & facility-types. (just saying)