ON this version is possible to have the width of the modulator associated
to the RF pulse (to be used on MEBT systems)

ICSHWI-9069

Removed almost all use of dbpf.
Remove island_* snippets (now all IOCs should use evrisland-base.iocsh)

This way is possible the set the frequency as a frequency value
(and not a selector). The read back value should be used as a referency
of the current set frequency.

These changes allow to use Mixed Mode synced with a 14Hz Pulse

New frequency events

See merge request e3/wrappers/rf/e3-evrisland!10

Include possibility to change between modes

See merge request e3/wrappers/rf/e3-evrisland!9

And include default delay for beam start/beam end for global mode

Set pulsers to react to event 15; Removed the pre-pulse delay when global mode is on; Set pulser 0 (modulator) to trigger upon arrival of RFSt event;

It is missing to define how to manage Beam Start an Beam End