UI: PromotionTask and ClusterPromotionTask support

[Marvin9]

Checklist

• I've searched the issue queue to verify this is not a duplicate feature request.
• I've pasted the output of kargo version, if applicable.
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Proposed Feature

Upcoming PromotionTask and ClusterPromotionTask in v1.2 needs to be visible or configurable from UI.

As they affect promotion steps, the UI for the same should be updated. For example, these tasks executed by this PromotionTask or ClusterPromotionTask. It shouldn't be drastic change just separation of view while also persisting the order

Motivation

• Better Tasks observability in promotion steps
• CRUD of PromotionTask and ClusterPromotionTask for ClickOps users

Suggested Implementation

PromotionTask and ClusterPromotionTask should follow same pattern as AnalysisTemplate. Except it can reuse the steps creation wizard from Stage creation when it adds step.

• PromotionTask CRUD should be on project level in new tab.
• ClusterPromotionTask CRUD should be on new settings tab from sidebar (refer feat: Adding ClusterAnalysisTemplate support for Stage verifications #2673 PR for settings)
• Promotion steps should split view by tasks, deep link to that step CRUD while also preserving the order of run
• In Stage creation wizard, the steps now should list and apply promotion and clusterpromotion task