Add Android demo for Kokoro TTS 1.0 (#1799)

scripts/apk/build-apk-tts-engine.sh.in

@@ -97,6 +97,11 @@ sed -i.bak s/"lang = null"/"lang = \"$lang_iso_639_3\""/ ./TtsEngine.kt
   sed -i.bak s/"lexicon = null"/"lexicon = \"lexicon.txt\""/ ./TtsEngine.kt
 {% endif %}
 
+{% if tts_model.lexicon %}
+  lexicon={{ tts_model.lexicon }}
+  sed -i.bak s%"lexicon = null"%"lexicon = \"$lexicon\""% ./TtsEngine.kt
+{% endif %}
+
 git diff
 popd
 
@@ -104,6 +109,10 @@ if [[ $model_dir == vits-melo-tts-zh_en ]]; then
   lang=zh_en
 fi
 
+if [[ $model_dir == kokoro-multi-lang-v1_0 ]]; then
+  lang=zh_en
+fi
+
 for arch in arm64-v8a armeabi-v7a x86_64 x86; do
   log "------------------------------------------------------------"
   log "build tts apk for $arch"