[Writer] Create a definition to identify sequences
Create a definition to identify scans as being sequences. How it is implemented I do not care. The objective is to have for the entry x.y specifying a sequence of several scans the following:
x.y/definition="ESRF basic sequence"
x.y/definition@version="1.0"
x.y/definition@URL="URL of the web page explaining that we create a measurement group with a counter specifying the scan indices"
Things will evolve and we'll have more sophisticated sequences. However, this basic sequence is going to be a common tool expected to be used by many beamlines until their acquisition modes mature.
I can expect multiple definitions for sequences. For instance "ESRF fullfield sequence", "ESRF fluotomo sequence"or whatever one can think about...