aiida/common/progress_reporter.py could accept **kwargs

[khsrali]

This is particularly useful, when unit and unit_scale is to be set during a callback.
see:
aiidateam/disk-objectstore#171 & #6562

An ideal use case would be:

# in aiida-core
with get_progress_reporter()(total=1) as progress:
  callback = create_callback(progress)
  external_function(.., callback=callback)

# some other package
def external_function(.., callback=callback):
  ..
  callback(
      action="init",
      value={
          "total": 10,
          "description": "my_description",
          "unit": 'B'          #**kwargs
          "unit_scale": 1024   #**kwargs
      },
  )