Wayland 文本输入协议 v1，版本不稳定 v1

为仅支持文本输入不稳定 v1 的 Wayland 服务器上的应用程序添加对文本输入和输入方法的支持。

用于 Qt Wayland 平台插件

源代码可在 qtwayland/src/3rdparty/protocol/text-input-unstable-v1.xml 中找到。

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