Agent for IFM KQ1001 continuous level sensor

[swh76]

Description

Adds new agent for reading out an IFM KQ1001 continuous level sensor. Agent is basically a copy of the IFM SBN246 flowmeter agent.

Motivation and Context

I wrote this agent to be able to read out this sensor in the SLAC DR lab.

How Has This Been Tested?

Tested using local checkout of socs at SLAC using a KQ1001 sensor. Seems to be working!
A minor issue is that it at first I had 2x SBN246s and 1x KQ1001 reading out w/ separate agents through a single IFM AL1340 IOLink Master and was getting errors in the agent dockers when all three running (see #760 (comment)). I reduced this by reducing the Pacemaker cadence for this new agent from 1 Hz to 0.2 Hz and setting the Pacemaker quantize flag just for this new agent to False. The issue may be due to accessing each of the AL1340 ports via the web interface using 3x separate agents (so there's nothing to prevent collisions). The agents don't seem to crash on these errors, but may have to change the implementation of the AL1340 agent(s) if ever want to scale to a larger number of sensors.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project.
• My change required a change to the documentation.
• I have updated the documentation accordingly.