Add ability to handle Split metrics

[dineshg13]

Component(s)

processor/schema

Is your feature request related to a problem? Please describe.

Split Metrics were introduced as part of schema file format 1.1.0 .

see https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/schemas/file_format_v1.1.0.md

Schema Processor currently doesn't support Split Metrics operation.

Describe the solution you'd like

Schema Processor should be able to handle Split Metrics.

Describe alternatives you've considered

No response

Additional context

No response

[github-actions]

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