[minor] Add Additional Resources addon support to GitOps flow

[Hita-Pandya]

Description

This PR introduces support for the Additional Resources addon in the GitOps flow for Maximo Application Suite (MAS SaaS). Additional Resources are components or configurations that may be needed after MAS is installed to support specific features, integrations, or performance requirements. The exact requirements depend on the deployment model and enabled applications.
SRE can install and uninstall the Additional Resources addon through GitOps.

• Epic: MASR-5894

Testing

See https://github.ibm.com/maximoappsuite/saas-tekton/pull/191 for first half of GitOps automation process testing.

Test install case

1. Set the noble7 ArgoCD root application to point to this branch.

2. Verified the param made it to the ArgoCD for my MAS instance and was set.

3. Verified the additional resources is installed with correct instances on the noble7 cluster.

Test uninstall case

1. Set the noble7 ArgoCD root application to point to this branch.

2. Verified the param removed from the ArgoCD for my MAS instance.

3. Verified the additional resources is uninstalled on the noble7 cluster.

[ashleytate614]

Looks good!