SAPI - Language codes and other fields to not be Empty (fix for #384)

[willwade]

nb; using locale to get correct lang codes that are understandable

This matches eSpeak too

You should now get data like

<Voice id=HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Speech\Voices\Tokens\TTS_MS_EN-US_DAVID_11.0
          name=Microsoft David Desktop - English (United States)
          languages=['en-US']
          gender=Male
          age=Adult>
<Voice id=HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Speech\Voices\Tokens\TTS_MS_EN-US_ZIRA_11.0
          name=Microsoft Zira Desktop - English (United States)
          languages=['en-US']
          gender=Female
          age=Adult>
<Voice id=HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Speech\Voices\Tokens\TTS_MS_ES-ES_HELENA_11.0
          name=Microsoft Helena Desktop - Spanish (Spain)
          languages=['es-ES']
          gender=Female
          age=Adult>
<Voice id=HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Speech\Voices\Tokens\TTS_MS_FR-FR_HORTENSE_11.0
          name=Microsoft Hortense Desktop - French
          languages=['fr-FR']
          gender=Female
          age=Adult>
<Voice id=HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Speech\Voices\Tokens\TTS_MS_RU-RU_IRINA_11.0
          name=Microsoft Irina Desktop - Russian
          languages=['ru-RU']
          gender=Female
          age=Adult>

[willwade]

RE: #385 @soleyhyman - take a look if you can

[willwade]

nb: @cclauss i see now something you were trying to tell me about yesterday - its timing out on espeak get voices in the test,

Im not sure why. with this PR if I do (on Windows)

import pyttsx3
engine = pyttsx3.init('espeak')
voices = engine.getProperty('voices')
for voice in voices:
    print(voice)

It runs fine