add mapping sinaps to Fd mapping for diffusion

Requirements

Descriptive title for this enhancement

Add mapping sinaps to Fd mapping

Actual behavior

Actually there is only a mpping FD to SINAPS in case of acquisition. For diffusion mapping for diffusion is stored in plugin core

Expected behavior

optionnal mapping could be added in order to be more customized depending to sinaps implementation ex if Contract Date are send from SINAPS a mapping could be done like (example !)

Xpath	ldap field	transform method
ElementCarriere/Contrat/dateDebut	fdContractStartDate	convertToFDDate
ElementCarriere/Contrat/dateFin	fdContractEndDate	convertToFDDate

where convertToFDDate is a dedicated fonction wich transform 2019-01-15 to 2019011500Z

Step by step description of new behaviour

Set mapping table inside a dedicated like FdSinapsDiffusionMap in sinaps config
modify code to use this mapping

Benefits

More configurable for non mandatory field

Possible Drawbacks

Complexity, Keep this feature for simple map and transformed attribut : non conditional features