Update FB_MotionPneumaticActuator to include a flow meter

[nrwslac]

Description

-Adds FB_FDQ_FlowMeter to FB_MotionPneumaticActuator

Motivation and Context

ST4K4 in TMO gets a flow meter.

How Has This Been Tested?

Running on TMO motion, on local copy of common components.

Where Has This Been Documented?

Pre-merge checklist

• Code works interactively
• Test suite passes locally
• Code contains descriptive comments
• Libraries are set to Always Newest version (Library, *)
• Committed with pre-commit or ran pre-commit run --all-files

[ZLLentz]

You should note that this FB is for general pneumatic motion, not just for the TMO stopper, though it seems like this has only been used for stoppers in practice:
https://github.com/search?q=org%3Apcdshub%20FB_MotionPneumaticActuator&type=code
Do all the cases in the above search also have flow meters added? (ST3K2, ST5K4). Are there any consequences to having the extra PVs, code, and link points available for instances without flow meters?

[nrwslac]

FB_MotionPneumaticActuator

I think this is a good point. Not all PneumaticActuators will use an FDQ Flow meter. I am going to close this and add an FDQ flow meter to ST4K4's program.

[nrwslac]

On review, not all actuators utilizing FB_MotionPneumaticActuator will use an FDQ flow meter.