How to set HID properties manufacturer_string and product_string

How can one set the HID 'manufacturer_string' and 'product_string' for the (BLE) HID device which is created using the HIDService()?

Setting the Bluetooth Name which shows up in the host while pairing is easy and documented.

But how to set the HID device properties I have no idea where to look.

Printing these properties on the host is easy like so:
```
import hid
infos = hid.enumerate(0, 0)
for info in infos:
print(info['manufacturer_string'], info['product_string'], info['path'])
```
hid library from: https://pypi.org/project/hid/

Start by tracing the HIDService() entry point and the existing Bluetooth Name configuration to find where HID properties are defined. Verify the result with the Python hid.enumerate(0, 0) example; done means the host reports the requested manufacturer_string and product_string.

Written by the indexing model from the issue text.