Add new prop for custom mixer

All existing objects can be found in the directory: xdiskjockey/config.lua

Config.SpawnMixerTable = {
    -- you can define what model it will spawn at what coords + heading and render distance
    -- this is mostly used for adding the DJ mixer in the world so there just
    -- isnt marker alone.
    {
        model = "sf_prop_sf_dj_desk_02a",
        pos = vector3(683.8, 570.87, 129.46),
        heading = 161.39,
        renderDistance = 100.0,
    },

    {
        model = "sf_prop_sf_dj_desk_02a",
        pos = vector3(199.58, 1165.72, 226.01),
        heading = 105.42,
        renderDistance = 100.0,
    },
}