Feature Request: Support for Multiple Racks & Multipel Sites

[GoodrichDev]

Add the ability to define and display multiple racks within tinyDC, instead of being limited to a single rack layout per page.

Many homelabs and small datacenters use more than one rack:

• A main rack for servers
• A network rack (patch panels, switches)
• A storage rack
• A test/dev rack

Having tinyDC render multiple rack visualizations on one page would allow users to map their full environment.

Something like:

{
  "racks": [
    {
      "id": "main-rack",
      "name": "Main Rack",
      "totalUnits": 16,
      "devices": [ ... ]
    },
    {
      "id": "network-rack",
      "name": "Network Rack",
      "totalUnits": 12,
      "devices": [ ... ]
    }
  ]
}