feat(update): 添加新的更新通道 Nightly

Plain Craft Launcher 2/Modules/ModSecret.vb

@@ -732,7 +732,17 @@ PCL-Community 及其成员与龙腾猫跃无从属关系，且均不会为您的
     End Function
     Public Sub NoticeUserUpdate(Optional Silent As Boolean = False)
         Dim channel = GetCurrentUpdateChannel()
-
+        If channel = UpdateChannel.nightly Then
+            If Not IsVerisonLatest() Then
+                Dim latest = RemoteServer.GetLatestVersion(channel, If(IsArm64System, UpdateArch.arm64, UpdateArch.x64))
+                If MyMsgBoxMarkdown($"启动器有新版本可用（{VersionBaseName} -> {latest.VersionName}）。由于你选择了 Nightly 更新通道，需要立即更新才能继续使用。{vbCrLf}{vbCrLf}{latest.Changelog}", "启动器更新", "更新", "或者更新", ForceWait:=True)
+                    UpdateStart(False)
+                End If
+            Else
+                If Not Silent Then Hint("启动器已是最新版 " + VersionBaseName + "，无须更新啦！", HintType.Finish)
+            End If
+            Return
+        End If
         If Not IsVerisonLatest() Then
             Dim latest As VersionDataModel = Nothing
             Dim checkUpdateEx As Exception = Nothing