Add C# API for spoken language identification (#697)

.github/scripts/test-dot-net.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+
+cd dotnet-examples/
+
+cd spoken-language-identification
+./run.sh
+
+cd ../online-decode-files
+./run-zipformer2-ctc.sh
+./run-transducer.sh
+./run-paraformer.sh
+
+cd ../offline-decode-files
+./run-nemo-ctc.sh
+./run-paraformer.sh
+./run-zipformer.sh
+./run-hotwords.sh
+./run-whisper.sh
+./run-tdnn-yesno.sh
+
+cd ../offline-tts
+./run-aishell3.sh
+./run-piper.sh
+ls -lh
+
+cd ../..
+
+mkdir tts
+
+cp dotnet-examples/offline-tts/*.wav ./tts