Stelliberty 2.0.0-beta2

• The config editor's syntax highlighting now adapts to the theme, with clearer contrast in both light and dark modes.
• The config editor no longer scrolls far past the last line, keeping only a small bottom margin.
• This is the .NET version of Stelliberty and is still in testing. The source code will be opened after it becomes stable. Please help test it and report any issues.

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• 配置编辑器的语法高亮现在会随主题适配，亮色和暗色下的对比度都更清晰。
• 配置编辑器不再能滚动到超出末行很远的位置，只保留少量底部留白。
• 这是 Stelliberty 的 .NET 版本，目前仍在测试中，稳定后才会开源。希望大家多多测试并反馈问题。