[OTEL] Add `instrumenter` option to Node SDK & disable auto-instrumentation

[mydea]

We want to add a new instrumenter option to Sentry.init() for the node SDK.
This option defaults to sentry, but can optionally be set to otel.

The otel option will disable any auto-instrumentation done by Sentry, expecting auto-instrumentation to be done by an OpenTelemetry integration.

• feat(core): Add instrumenter option to ClientOptions #6128
• feat(tracing): Allow to set instrumenter on Span & Transaction #6136
• feat(otel): Disable node tracing auto instrumentation when using otel #6144
• feat(otel): Handle inconsistent instrumenter option #6153

ref #6000