Introduced explicit index resolution API

[nibix]

Description

This is a branch merge request to illustrate the changes needed for the improved index resolution #5367. It is not yet finished yet. It is dependent on changes in core. Thus, this PR does not even compile yet.

Please look first at the companion PR in core: opensearch-project/OpenSearch#18523

• Category
  • Enhancement
• Why these changes are required?
  • The current index resolution mechanism employed by the security plugin (with the class IndexResolverReplacer in the center) has several downsides: It is slow, it is fragile, it is messy. The goal of the changes in this and the related PR is to fix this.
• What is the old behavior before changes and new behavior after changes?

Issues Resolved

• [FEATURE] Index pattern resolution improvements #5367

Testing

Check List

• New functionality includes testing
• New functionality has been documented
• New Roles/Permissions have a corresponding security dashboards plugin PR
• API changes companion pull request created
• Commits are signed per the DCO using --signoff

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