Add Dungeon Siege 1 and 2 Multiplayer fixes

[kasha695]

Fix multiplayer functionality for Dungeon Siege 1 and 2. Although both games have them disabled by default many people will apply a fix to unlock both games expansions, which in turn re-enables multiplayer. Alternatively for Dungeon Siege 1 you can add "Zonematch=true".

Dungeon Siege 1 Exp and Multiplayer fix
Dungeon Siege 2 Exp and Multiplayer fix

Directplay is required for both titles to work in multiplayer - Winehq Directplay Titles

I've symlinked the gog fixes to the steam ones as they are the same, even the gog version requires "Zonematch=true" for Dungeon Siege 1 - Reference

For the CD versions of these titles I've symlinked Dungeon Siege 2 as its just directplay required but not for Dungeon Siege 1 as it doesn't need the "Zonematch=true" argument.

[Root-Core]

There have been some recent improvements to DirectPlay in Wine. Have you tested against a recent version of Wine?

It probably won't be enough. But it's worth a try, I guess?

[kasha695]

I tested them both with GEProton9-21 (which should have the bleeding edge of wine at the time) and it's still not quite there. Just tried again with the Wine 9.22 release, no luck.

I'm keeping an eye on the directplay progress, I'll keep testing them but for now we still have to rely on this fix.

[R1kaB3rN]

ValveSoftware/Proton#3393
ValveSoftware/Proton#3394