Get all project types

{
  "type": "array",
  "items": {
    "type": "object",
    "description": "Details about a project type.",
    "properties": {
      "color": {
        "type": "string",
        "description": "The color of the project type."
      },
      "descriptionI18nKey": {
        "type": "string",
        "description": "The key of the project type's description."
      },
      "formattedKey": {
        "type": "string",
        "description": "The formatted key of the project type."
      },
      "icon": {
        "type": "string",
        "description": "The icon of the project type."
      },
      "key": {
        "type": "string",
        "description": "The key of the project type."
      }
    },
    "additionalProperties": false
  }
}