Added AHJ requirements in Retrieve AHJ API

Retrieve AHJ API now returns wind code, wind speed, snow load, and max span for the AHJ that your project falls under. With the new fields, you can streamline your post-sales design workflows including racking design.

  "ahj": {
    "id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
    "name": "Green township",
    "units_of_measurement": "Imperial",
    "general_requirements": {
      "wind_code": "ASCE 7-16"
    },
    "structural_requirements": {
      "wind_speed": 70,
      "snow_load": 10,
      "max_span": 48
    }
  }