st.waitFor — Async Polling Helper

Yields the current coroutine until cb returns a non-nil value.

---@param cb function        Returns nil to keep waiting, any other value to resolve
---@param errMessage string? Error if timeout is reached
---@param timeout? number | false  Milliseconds to wait (default 1000, false = infinite)
---@return any               The first non-nil value returned by cb
local value = st.waitFor(function()
    return GetVehiclePedIsIn(cache.ped, false)  -- returns 0 while not in vehicle
end, 'Timed out waiting for vehicle', 5000)

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