message: Ignore warning C4100 on Windows for unused parameter in OpenTelemetry headers.
  * Ignore warning C4100 on Windows for unused parameter in OpenTelemetry
  headers.
  * Disable other warnings like 4244 and 6323 as well.
  * Clang format fix.
diff: #include <azure/core/tracing/opentelemetry/opentelemetry.hpp>
  #include "test_exporter.hpp" // Span Exporter used for OpenTelemetry tests.
  +#if defined(_MSC_VER)
  +// The OpenTelemetry headers generate a couple of warnings on MSVC in the OTel 1.2 package, suppress
  +// the warnings across the includes.
  +#pragma warning(push)
  +#pragma warning(disable : 4100)
  +#pragma warning(disable : 4244)
  +#pragma warning(disable : 6323) // Disable "Use of arithmetic operator on Boolean type" warning.
  +#endif
  #include <opentelemetry/sdk/common/global_log_handler.h>
  #include <opentelemetry/sdk/trace/processor.h>
  #include <opentelemetry/sdk/trace/simple_processor.h>
  #include <opentelemetry/sdk/trace/tracer_provider.h>
  +#if defined(_MSC_VER)
  +#pragma warning(pop)
  +#endif
  using namespace Azure::Core::Http::Policies;
  using namespace Azure::Core::Http::Policies::_internal;
  