Include PCI ID of GPUs in data dumps

[dreamer]

They are reported as VendorID and DeviceID in the Steam System Information report, under "Video Card" section:

VendorID:  0x8086
DeviceID:  0x126

Rationale:

GPU vendors are not very open about providing complete list of PCI IDs - NVIDIA used to provide it, but stopped updating it. Intel and AMD seem to not have these lists on their sites any more (and webarchive versions seem to be corrupted).

Existing online databases are very incomplete when it comes to GPUs. ProtonDB is in nice position to generate such information based solely on existing info. It would be useful to Proton developers, Wine developers, etc.