feat: Add support for Pico headsets face tracking

[curoviyxru]

Resolves #3.

[zmerp]

Splitting out the code into multiple files seems good, but there are some things I would change, which is to reuse SetParam without duplicating its code, and also the ConsumePacket functions feel a bit weird. Overall i'm not so sure about the architecture of the code but also I was not happy with the prior architecture, even though I was the author. I'm not a C# developer anymore (I have only a couple of projects literally 10 years ago) and I cannot tell you which would be good code patterns to use. I'd also be ok to merge as it is, if you say the code works as expected.

[curoviyxru]

which is to reuse SetParam without duplicating its code

good idea, actually

ConsumePacket functions feel a bit weird

yeah, reading from packet is not the best idea at least, will refactor it further