Allow for custom rack/device/module airflow choices

[llamafilm]

NetBox version

v4.2.4

Feature type

Data model extension

Proposed functionality

A new airflow option "bottom to rear"

Use case

Devices like this: https://www.epiphan.com/products/pearl-2/tech-specs/

Database changes

No response

External dependencies

No response

[jeremystretch]

Given that all these creative new airflow signatures keep coming up, maybe the more expedient path would be to make DeviceAirflowChoices configurable by the admin.

[ChrisDeh]

As i was just about to open a issue for something similar, but for Racks: Maybe consider making it configurable for Racks as well. Especially Outdoor Shelters tend to have special airflow.