onnxruntime

Add logging APIs for custom operators (#14416)

### Description
Add logging APIs for custom ops.

This PR introduces a `OrtLogger` type, which can be retrieved from a
`OrtKernelInfo` or `OrtKernelContext`. The kernel info's logger is the session logger stored
in the execution provider. The kernel context's logger is a run logger.



### Motivation and Context
Allows custom ops to log information in a manner consistent with
built-in ops.

Example usage in custom op:
```C++
struct MyCustomKernel {
  MyCustomKernel(const OrtApi& api, const OrtKernelInfo* info) {
    Ort::ConstKernelInfo kinfo(info);
    this->logger_ = kinfo.GetLogger();
    // ...
    ORT_CXX_LOGF_NOEXCEPT(this->logger_, OrtLoggingLevel::ORT_LOGGING_LEVEL_ERROR, "Error: %s", err_msg);
  }

  void Compute(OrtKernelContext* context) {
    ORT_CXX_LOG(this->logger_, OrtLoggingLevel::ORT_LOGGING_LEVEL_VERBOSE, "Calling compute...");
    // ...
  }

  // ...
 private:
  Ort::Logger logger_;
};
```