include instrumentation.Version in log

[SimonCropp]

Changes

Given Instrumentation version is being captured in AddInstrumentation

    public override LoggerProviderBuilder AddInstrumentation<TInstrumentation>(Func<TInstrumentation> instrumentationFactory)
    {
        Debug.Assert(instrumentationFactory != null, "instrumentationFactory was null");

        this.Instrumentation.Add(
            new InstrumentationRegistration(
                typeof(TInstrumentation).Name,
                typeof(TInstrumentation).Assembly.GetName().Version?.ToString() ?? DefaultInstrumentationVersion,
                instrumentationFactory!()));

        return this;
    }

I assume the intent is to use it in the logs? So i added it there and added a test to assert it.

If u think Instrumentation version has no value in the logs, do you want another PR that removes the redundant version detection?

Merge requirement checklist

• CONTRIBUTING guidelines followed (license requirements, nullable enabled, static analysis, etc.)
• Unit tests added/updated
• Appropriate CHANGELOG.md files updated for non-trivial changes
• Changes in public API reviewed (if applicable)