Develop a migration strategy for ArgoCD

[lisac]

After establishing svc-bip-api as VRO's first app deployable in ArgoCD, we should determine a strategy for rolling out the ArgoCD deployment option for other apps on VRO; and a strategy for deprecating use of non-ArgoCD deployments. Additionally, we should ensure the partner teams have visibility into these changes.

Acceptance criteria

1. a prioritized list of VRO apps to be made available for deployment in ArgoCD
2. a strategy for deprecating use of non-ArgoCD deployments
3. a decision on when to address https://github.com/department-of-veterans-affairs/abd-vro/issues/3037
4. documentation to account for complexities in troubleshooting deployments. for example: how does one figure out which platform did the deployment (ArgoCD or non-ArgoCD)?

Notes about work

• depends on completion of #3041
• consider implementing a CODEOWNERS on va-abd-rrd-argocd-applications-vault - why: to support partner teams configuring deployments on their own apps while not disrupting affecting apps of other partners

[lisac]

To support the rollout, here are placeholder tickets for the remaining apps: (not in priority order)

• https://github.com/department-of-veterans-affairs/abd-vro/issues/3086
• https://github.com/department-of-veterans-affairs/abd-vro/issues/3087
• https://github.com/department-of-veterans-affairs/abd-vro/issues/3088
• https://github.com/department-of-veterans-affairs/abd-vro/issues/3089
• https://github.com/department-of-veterans-affairs/abd-vro/issues/3090
• https://github.com/department-of-veterans-affairs/abd-vro/issues/3091
• https://github.com/department-of-veterans-affairs/abd-vro/issues/3092
• https://github.com/department-of-veterans-affairs/abd-vro/issues/3093
• https://github.com/department-of-veterans-affairs/abd-vro/issues/3094