Update EPurchaseResultDetail

[yaakov-h]

Resolves #523, finally.

I gave up and added my own names since Valve's dont seem to appear anywhere that we can get our hands on.

[xPaw]

This should be all the values starting from 67:

67 "Complete-the-set bundles cannot be gifted"
68 "Blocked by U.S. government regulations"
69 "Blocked because user is not a commercial partner"
70 "The gift recipient already owns the gift"
71 "The gift is not valid for the recipient's region"
72 "The gift's price is significantly higher in the recipient's region, so the purchase is blocked"
73 "No account or email was specified to send the gift"
74 "Business account not allowed to purchase"
75 "Store / Business country code mismatch"
76 "User is associated with multiple cafes"
77 "User is not associated with any cafes"
78 "Address is invalid or contains invalid characters"
79 "Credit card number is invalid (does not pass LUHN checksum)"
80 "Cannot ship to APO/FPO"
81 "Billing name is invalid because it looks like it contains credit card data"
82 "Payment method is disabled"
83 "Payment method is not allowed for this purchase"

[codecov]

Codecov Report

Merging #729 into master will increase coverage by 0.24%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #729      +/-   ##
==========================================
+ Coverage    22.5%   22.74%   +0.24%     
==========================================
  Files          94       94              
  Lines        9630     9306     -324     
  Branches      814      770      -44     
==========================================
- Hits         2167     2117      -50     
+ Misses       7329     7055     -274     
  Partials      134      134

Impacted Files	Coverage Δ
SteamKit2/SteamKit2/Base/PacketBase.cs	55.55% <0%> (-11.12%)	⬇️
SteamKit2/SteamKit2/Base/ClientMsg.cs	22.98% <0%> (-9.78%)	⬇️
SteamKit2/SteamKit2/Util/Utils.cs	25% <0%> (-3.05%)	⬇️
SteamKit2/SteamKit2/Util/HardwareUtils.cs	25.35% <0%> (-1.88%)	⬇️
SteamKit2/SteamKit2/Util/DebugNetworkListener.cs	0% <0%> (ø)	⬆️
SteamKit2/SteamKit2/Steam/SteamClient/Callbacks.cs	0% <0%> (ø)	⬆️
SteamKit2/SteamKit2/Steam/UFSClient/UFSClient.cs
SteamKit2/SteamKit2/Steam/UFSClient/Callbacks.cs
.../Steam/Handlers/SteamNetworking/SteamNetworking.cs	21.21% <0%> (ø)
...amKit2/Steam/Handlers/SteamNetworking/Callbacks.cs	0% <0%> (ø)
... and 2 more

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