feat: 关联 discord 账号

common/constants.go

@@ -44,6 +44,7 @@ var PasswordLoginEnabled = true
 var PasswordRegisterEnabled = true
 var EmailVerificationEnabled = false
 var GitHubOAuthEnabled = false
+var DiscordOAuthEnabled = false
 var LinuxDOOAuthEnabled = false
 var WeChatAuthEnabled = false
 var TelegramOAuthEnabled = false
@@ -82,6 +83,8 @@ var SMTPToken = ""
 
 var GitHubClientId = ""
 var GitHubClientSecret = ""
+var DiscordClientId = ""
+var DiscordClientSecret = ""
 var LinuxDOClientId = ""
 var LinuxDOClientSecret = ""
 var LinuxDOMinimumTrustLevel = 0