Add Deadlock protos

[psychonic]

• Added Deadlock GC protos to protos.csv
• Generated code for Deadlock GC protos
• Added NHA specialization for Deadlock GC

[xPaw]

See also #1426, main problem being the library is not trimmable.

[psychonic]

That's a fair point. I didn't realize that other PR existed. (It also includes many protos that don't involve Steam traffic).

I would argue that there's no harm in including more until that potential future point in time when all are dropped.

[psychonic]

Disregard that latest commit updating the steamlanguage files. I meant to include it in a separate branch. Removing shortly...

[xPaw]

I won't block this. I assume we can't really use shared generic Steam protos because they can be out of sync between games (is that a problem)?

[psychonic]

I won't block this. I assume we can't really use shared generic Steam protos because they can be out of sync between games?

I'm not certain, but I think those base ones (steammessages_*) may be able to be shared. While they differ between games, I believe it's only due to them being synced from the steam code to the game's gcsdk at different times. In at least most cases, I would think the newer ones are backward compatible with old.

@voided may remember why that wasn't originally unified

[psychonic]

Oh, I think I remember now. At the network level, they're compatible. But the game-specific proto classes reference the steam ones in some cases, and there can be compatibility issues there when using a different version, or if the generated class path isn't what it's expecting (although some hackery may be able to deal with the latter)