Fix tts-adapter-sapinative

- Move the SAPILib JNI bridge source code from sapi-nar to the
  tts-adapter-sapinative module itself.
- New Visual Studio 2019 build solution and project for the DLLs and
  README with build instructions.
- Improve voice data recovery to also get locale, gender and age and
  include this info in the getAvailableVoices() list.
- Replace unsupported ssml "mark" tag by sapi "bookmark" tag in
  transform-ssml.xsl.
- Don't insert ending mark as SAPI does not detect bookmarks after the
  last element of a sentence.
- Add matching enums between the Java and the native side for SAPI
  errors identification.

pom.xml

@@ -52,7 +52,7 @@
     <module>nlp/dtbook-break-detection</module>
     <module>audio/audio-common</module>
     <module>audio/audio-encoder-lame</module>
-    <!-- att-nar and sapi-nar are excluded because they are platform-specific. -->
+    <!-- att-nar is excluded because it is platform-specific. -->
     <!-- tts-adapter-attnative is excluded because it depends on att-nar which cannot be publicly
          deployed according to the AT&T's license. -->
     <module>tts/css-speech</module>