Now when a control table is changed the readback is updated automatically
on each pulse.

The time to prepare and write control tables was making the acquisition process
longer than it should be. To solve it the prepare and write of the table was
moved for a thread that is triggered when Write to table is enabled.
With this change a new PV was introduced to indicate if the writting process
was finished

Now it is a unified PV (there is no more I and Q components)

This way it will be set for SP and FF table. Before this property
exists only for FF table.

Table mode was implemented just for FF and wasn't correctly.
Now is implement for both (SP and FF), and using the right registers and bits

From epicsFloat32 (float) to epicsFloat64(double), so all the
digits will be used.

This commit changes the way control table for special operation is
managed. The class sis8300llrfControlTableChannelSpecOp was merged
with the class sis8300llrfControlTableChannel. This change let the
code simpler.

Besides that this commit fix a problem with tables for special mode,
before this commit these tables weren't write to memory. This happens
because ControlTableChannelSpecOp use a different address from
ControlTableChannel, and then the getters and setters weren't find
by the PV.

This commit remove the warning messages on ioc boot similar to this:

sevr=minor [WRN] ../epics-nds/ndsApp/src/ndsPVContainer.h:295 NDS:
getReason: port: 0: 'AngleTable' reason is not found.
sevr=minor [WRN] ../epics-nds/ndsApp/src/ndsAsynDriver.cpp:195 NDS: 0
: `AngleTable` reason NOT found.

This messages occurred because of the bug commented before.

They are now automatically initialized to 1 element with value 0.
They now have a separate pv to trigger a write.
Pulse type 0 is now automatically chosen at startup.
All of this removes the need to load dummy table before bringing the device to ON state.
You can now immediatley enter ON state upon booting the IOC.