PCA9685: staggered Outputs

**Describe the problem you have/What new integration you would like**
The PCA9685 device offers a feature named _staggered output on and off times_ that enables the outputs to trigger at different times compared to each other. A phase shift feature. This minimizes current surges. As far as I can see the component doesn't offer this feature to be parametrized.

**Please describe your use case for this integration and alternatives you've tried:**
minimizing of current surges / improve EMI on multiple attached consumer. Helps to simplify power supply design.

**Additional context**
see product data sheet PCA9685, page 16, chapter 7.3.3 ```"LED output and PWM control"```