[Remote Store] Introduce remote store path type in customData in IndexMetadata

[ashking94]

Is your feature request related to a problem? Please describe

This is a sub issue for #12567. As part of this issue, we introduce remote store path information which we will store in the IndexMatadata class and specifically customData field. This information will be useful in determining the path for a shard. User also gets the option to select the optimised approach versus the existing approach. We also get the extensibility option to further optimise it and change it for better resiliency, performance and throughput.

Describe the solution you'd like

NA

Related component

Storage:Performance

Describe alternatives you've considered

No response

Additional context

No response