Add X-ASR experimental backend

Ariver

2026-06-07 d435cd4b9754de4a567261b1a877add3af977d9a

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"CFBundleDisplayName" = "私语输入法";
"CFBundleName" = "私语输入法";
"NSMicrophoneUsageDescription" = "私语输入法需要访问麦克风，用于语音转文字输入。";