Fix claims.

Use OID instead of email for microsoft identifier.
Fix PlayerCount route.
Add created date to user table.
Create spectator icon.

Shogi.Database/User/Tables/User.sql

@@ -4,6 +4,7 @@
 	[Name] [user].[UserName] NOT NULL UNIQUE,
 	[DisplayName] NVARCHAR(100) NOT NULL,
 	[Platform] NVARCHAR(20) NOT NULL,
+	[CreatedDate] DATETIMEOFFSET DEFAULT SYSDATETIMEOFFSET()
 
 	CONSTRAINT User_Platform FOREIGN KEY ([Platform]) References [user].[LoginPlatform] ([Platform])
 		ON DELETE CASCADE