Namespace the hwdb HID_BPF_n properties

Right now both "testing" and "stable" hwdb are using the exact same HID_BPF_n properties, meaning that we might have a conflict.

We should have:

• HID_BPF_T_n for testing
• HID_BPF_S_n for stable

It won't change a bit in the rust code but ensure both hwdb will not step on each other toes