Update the code block for fip mapper

[dougollerenshaw]

This PR updates the FIP mapper to hard-code the name of the FIP acquisition repo instead of the experimental orchestration repo for VR/FIP, Aind.Experiment.VrForaging-Fip.

Hardcodes code.name as "aind-physiology-fip"

Hardcodes code.url as "https://github.com/AllenNeuralDynamics/Aind.Physiology.Fip"

Sets code.version as rig.version from the FIP extracted metadata (here). This is the aind-physiology-fip package version

Sets code.parameters as session.allow_dirty_repo (example. If true, this tells us that the acquisition code is not guaranteed to match the release version.

No longer uses session.commit_hash, since that's the HEAD of the deployment repo the launcher runs from (Aind.Experiment.VrForaging-Fip) rather than the acquisition control software itself.

The resulting Code entry on the FIP data stream will look like this:

{
  "url": "https://github.com/AllenNeuralDynamics/Aind.Physiology.Fip",
  "name": "aind-physiology-fip",
  "version": "0.3.1-rc2",
  "parameters": {"allow_dirty_repo": true}
}

closes #418

[dbirman]

Looks good