Fix EigerDecoder status

[GDYendell]

name is a reserved key in the parameter tree, so parameters cannot be called name. Rename to class here.

This is what causes these errors in fastcs-eiger when it ignores them.

WARNING:root:Removing parameters with invalid names: ['0/status/decoder/name']
WARNING:root:Removing parameters with invalid names: ['1/status/decoder/name']
WARNING:root:Removing parameters with invalid names: ['2/status/decoder/name']
WARNING:root:Removing parameters with invalid names: ['3/status/decoder/name']

Could also add some other relevant status here now that it is exposed in fastcs

• detector_model_
• buffer_size
• frames_allocated_
• current_frame_number_
• dropping_frame_data

[GDYendell]

@Ohisemega could you react to this comment so I can assign you?

[Ohisemega]

@Ohisemega could you react to this comment so I can assign you?

Acknowledged