Exclude wine-mono and wine-gecko from proton_dist.tar.gz

[pchome]

Feature Request

I confirm:

• that I haven't found another request for this feature.
• that I have checked whether there are updates for my system available that
  contain this feature already.

Description

Would reduce proton_dist.tar.gz file size and increase download speed by ~2x.

content	size	unpacked size
with	494384K	1.2G
w/o	272243K	905094K

Justification [optional]

wine-gecko wasn't updated since forever (2.47 was introduced in ~wine-1.9.13).
wine-mono also updating rarely.

Likely several next Proton updates(releases) would include the same wine-gecko and wine-mono versions. So I wondering if it's possible easily switch them to
SteamApps/common/Steamworks Shared/_CommonRedist/, where all shared redistributable components stored.

Risks [optional]

None.

References [optional]

#1011

[aeikum]

It's a reasonable request, but no, it's not super easy (we don't have access to those depots, and even if we did, coordinating those updates adds complication). Compared to typical download sizes on Steam, I don't think ~300MB is terribly much to ask, considering Proton doesn't update that often.