Instrumentation Scope and cloning

[cijothomas]

Follow up to #2220

I think we should remove the Cow, and make scope take owned versions. Scopes are created only very few times in the app, so there should not be perf concerns.
https://github.com/open-telemetry/opentelemetry-rust/blob/main/opentelemetry/src/common.rs#L422

if perf is a concern, we can make Instrumentation Scope be an Arc of InstrumentationScopeInner to make cloning cheap.

[cijothomas]

@stormshield-fabs I think you mentioned this in the PR but i am not able to locate that comment now! Can you help check if this cleanup is needed?

[cijothomas]

tagging for 0.27 as we want to avoid breaking changes after 0.27

[stormshield-fabs]

This was brought up in #2220 (comment)

[cijothomas]

This was brought up in #2220 (comment)

Thanks! I was searching for it, but wasn't able to locate easily!!
Would you be able to address this?