Add a readme for the parler-tts example. (#2434)

* Add a readme for the parler-tts example.

* Remove the python decode script.

* mp4 tweaks.

* Another readme tweak.

README.md

@@ -120,6 +120,8 @@ We also provide a some command line based examples using state of the art models
   model using residual vector quantization.
 - [MetaVoice](./candle-examples/examples/metavoice/): foundational model for
   text-to-speech.
+- [Parler-TTS](./candle-examples/examples/parler-tts/): large text-to-speech
+  model.
 - [T5](./candle-examples/examples/t5), [Bert](./candle-examples/examples/bert/),
   [JinaBert](./candle-examples/examples/jina-bert/) : useful for sentence embeddings.
 - [DINOv2](./candle-examples/examples/dinov2/): computer vision model trained
@@ -236,6 +238,7 @@ If you have an addition to this list, please submit a pull request.
         - Whisper, multi-lingual speech-to-text.
         - EnCodec, audio compression model.
         - MetaVoice-1B, text-to-speech model.
+        - Parler-TTS, text-to-speech model.
     - Computer Vision Models.
         - DINOv2, ConvMixer, EfficientNet, ResNet, ViT, VGG, RepVGG, ConvNeXT,
           ConvNeXTv2, MobileOne, EfficientVit (MSRA), MobileNetv4, Hiera.