Concurrency Requirements for `Logger` and `LoggerProvider`

[kmos]

Scope

Logs APIs must provide specific guarantees and safeties for concurrency.

• LoggerProvider - all methods are safe to be called concurrently.
• Logger - all methods are safe to be called concurrently.

References:

Logs API: https://opentelemetry.io/docs/specs/otel/logs/api/