Allow arrays of primitives in Resource Attribute Values

[Austin-Tan]

Feature Request

Follow up to #1647 , where it was pointed out that arrays of primitives should be allowed as the value in KV pairs as per spec.

Describe the solution you'd like:

Our current behavior will throw an exception (post #1647) if invalid data types are used as the values.

Describe alternatives you've considered.

We have an obligation to the spec to support this, right? I'm not sure about the extent to which we currently achieve everything the spec prescribes.

Additional Context

Add any other context about the feature request here.

[Austin-Tan]

Current issue in OTel specification:
open-telemetry/opentelemetry-specification#1184
Don't want to work on this until this is confirmed.

[cijothomas]

@Austin-Tan the spec issue is ready to be closed. We can address this now.

[Austin-Tan]

Sounds good, feel free to assign this to me. I'll work on this today.