needs testing.

hybrid.sub is created to add hybrid numbers to file, avoiding having to define that in st.cmd file.
Similar thing is done for VMM chips, since it's always going to be 2 per hybrid.

Add global configuration values. Global PVs should configure all parameters for all VMM FENS.
Channel global configurations need to connect to asyn port in order to correctly initialize the array record :(

Now most pertinent RBV records are not processed when acquisition is
ongoing.
A few records like LinkStatus and IsAcquiring are still scanned for
obvious reasons, but if we find out that this could not be the case, we
change it.

I still think this should also be treated in the API layer.

ADCVal and AnalogMon should process in the correct order for us to know
what we are reading.

We use PHAS field to make sure everything is processed after we have
checked that IsAcquiring is 0.

In order for VMM channel records to be able to see
"#CalcDISA" record, they need to know the prefix for Hybrid records.
This new naming structure allows that.

Added enable/disable option, which now requires for all records to be
instantiated so we can properly communicate.

This particular IOC spits some error messages with the current test
setup because it only has two hybrids.

In this case the semicolon ended up being part of the property name in
the db file. Of course, this is not good but I wanted to avoid having to
add $(C)=':' for now.

Its easy to change in the future if needed.

According to new VmmTblConfig definition

This does not mean that the configuration file will permanently stay on this folder/subfolder
structure.

It's just a way of letting things more easy to test and reproduce for now.

Substitution file is used in module build to set channel names, since that shouldn't change
too much with time and particular detector.

VMM and Hybrid numbers are left to be changed in the st.cmd file since that can change more often.

Now, for VMM, the pattern is:
$(R)$(H)$(V)$(C)$(CH)

R: Usually "NDet-VMMHYB-00". No colon after.
H: Hybrid number in range 0-5
V: VMM chip number in range 0-1
C: Colon Between device name and property Should be ":" but is a macro in case anyone
   decides that shouldn't be there anymore.
CH: Channel/register being set. Can be ST, SL, SC, STH, SM or SMX

Also, to make naming more visible and dynamic, stop using substitutions file.

Until now, records were only being loaded by local changes in st.cmd file.
This commit adds channels.substitutions and channels.template to makefile,
and loads its expansion in the st.cmd.

In this moment we are using only hybrid 0, this must be changed in the future