Add functionality for recording Rack Types for netbox 4.1.0+

[justin-davisibm]

I suppose this is more of a discussion on formatting as any logic would likely live in https://github.com/netbox-community/Device-Type-Library-Import, but I'd like to propose the following:

• Add new top level folder rack-types
• Children folders will follow the same {{ manufacturer_name }} format as device-types and module-types does today.
• Add new schema that supports the allowed field options for rack types in Netbox:
  • manufacturer (required)
  • model (required)
  • slug (required)
  • width (required)
  • u_height (required)
  • form_factor (2-post-frame, 4-post-frame, 4-post-cabinet, wall-frame, wall-frame-vertical, wall-cabinet, wall-cabinet-vertical)
  • starting_unit
  • desc_units (boolean)
  • outer_width
  • outer_depth
  • outer_unit (mm, in)
  • mounting_depth
  • weight
  • max_weight
  • weight_unit (kg, g, lb, oz)
  • description
  • comments
  • tags
  • id

This will allow a feature request to Device-Type-Library-Import to support Rack types as an importable object.

[BCurrell]

If this gets approved / added, I have access to the following 2 rack types I'd be willing to add files for:

• Startech 42U 4-post open frame
• Startech 12U 2-post desktop