Get app configuration

{
    "success": true,
    "data": {
        "category_icons": [
            {
                "key": "building",
                "label": "Building"
            }
        ],
        "unit_icons": [
            {
                "key": "building",
                "label": "Building"
            }
        ],
        "unit_badges": [
            {
                "key": "IPO",
                "label": "IPO"
            }
        ],
        "colors": [
            {
                "hex": "#3B82F6",
                "name": "Blue"
            }
        ]
    }
}