feat(csharp/src/Apache.Arrow.Adbc): add OpenTelemetry compatibly tracing library for csharp drivers

[birschick-bq]

Add a base class and library to support OpenTelemetry compatible tracing .

Drivers can instrument using TraceActivity and TraceActivityAsync methods to wrap sections of code to trace. The methods provide the current Activity so that instrumentors can add events or tags to the activity.

Key components

• TracingBase - each of AdbcDriver, AdbcConnection, AdbcDatabase, AdbcStatement now inherit from TracingBase.
• FileExporter, FileExporterExtensions - provide an implementation of an OpenTelemetry exporter to write trace files to a folder.
• ActivityExtensions - provide convenience methods for AddEvent and AddLink.
• TracingArrowArrayStream - a base class implementing IArrowArrayStream to provide the TracingBase to stream readers.

Tests include testing the TracingBase and FileExporter.