[Remote Store] Introduce new translog upload/download (with object metadata) flow while maintaining dual mode handling with existing upload/download flow.

[skumawat2025]

Is your feature request related to a problem? Please describe

This is a sub issue for #13091. As part of this issue, we introduce a new flow for upload/download of translog where tlog file will contain checkpoint file data as metadata/header. This will also maintain dual mode handling of translog upload/download with existing upload/download flow.

Describe the solution you'd like

NA

Related component

Storage:Performance

Describe alternatives you've considered

No response

Additional context

No response