Update protobufs

[xPaw]

• Updated ip field names to use deprecated ones. See Use the new ip fields in the logon message (IPv6 support) #758
• Legacy servicemethod
• CMsgClientServerList was removed - SteamDatabase/Protobufs@a4ba0a9#diff-0f28215af4ff6780216ed68eec25ff52
• CSGO removed added and removed from CMsgSOMultipleObjects for some reason SteamDatabase/Protobufs@9968f4a#diff-02da985728259665acfbb40eb2651ea1
• Removed FetchServerListAsync. Use ContentServerDirectoryService.
• Removed GetServersOfType.
• Removed UFSClient

[codecov]

Codecov Report

Merging #759 into master will increase coverage by 0.18%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master     #759      +/-   ##
==========================================
+ Coverage   22.44%   22.62%   +0.18%     
==========================================
  Files          96       94       -2     
  Lines        9674     9379     -295     
  Branches      817      772      -45     
==========================================
- Hits         2171     2122      -49     
+ Misses       7370     7128     -242     
+ Partials      133      129       -4

Impacted Files	Coverage Δ
SteamKit2/SteamKit2/Steam/CDNClient.cs	15.72% <ø> (+3.38%)	⬆️
...eamKit2/SteamKit2/Steam/SteamClient/SteamClient.cs	45.5% <ø> (+0.62%)	⬆️
SteamKit2/SteamKit2/Steam/SteamClient/Callbacks.cs	0% <ø> (ø)	⬆️
...team/Handlers/SteamMatchmaking/SteamMatchmaking.cs	3.77% <0%> (ø)	⬆️
...t2/SteamKit2/Steam/Handlers/SteamUser/Callbacks.cs	2.89% <0%> (ø)	⬆️
.../Steam/Handlers/SteamGameServer/SteamGameServer.cs	18.44% <0%> (ø)	⬆️
...dlers/SteamUnifiedMessages/SteamUnifiedMessages.cs	7.76% <0%> (ø)	⬆️
...2/Steam/Handlers/SteamUnifiedMessages/Callbacks.cs	0% <0%> (ø)	⬆️
...t2/SteamKit2/Steam/Handlers/SteamUser/SteamUser.cs	25.61% <0%> (ø)	⬆️
...Kit2/Steam/Handlers/SteamMasterServer/Callbacks.cs	0% <0%> (ø)	⬆️
... and 3 more

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[yaakov-h]

So server-list-via-CM is dead now?

[xPaw]

I removed GetServersOfType which means CDNClient.FetchServerListAsync also had to be removed. That method is trivially replaced by ContentServerDirectoryService.LoadAsync, like depot downloader already did: SteamRE/DepotDownloader@c697532

UFSClient also used the server list, I changed it to require a server for now.

EDIT: I looked at steam client, and I don't see UFS server being used. Steam downloads/uploads via the Cloud service, CCloud_BeginHTTPUpload_Response gives you the http url to upload to.