Bookmarks do not work with Coqui speech service

[tn3wman]

Description of bug / unexpected behavior

Tried to run the bookmark example with Coqui. The animations don't wait for bookmarks correctly.

Expected behavior

Expected to play the same as using Azure speech service.

How to reproduce the issue

Code for reproducing the problem

```py from TTS.api import TTS scene.set_speech_service(CoquiService(model_name=TTS.list_models()[17], speaker_idx=TTS(TTS.list_models()[17]).speakers[47])) ```

Additional media files

Images/GIFs

Logs

Terminal output

``` PASTE HERE OR PROVIDE LINK TO https://pastebin.com/ OR SIMILAR ```

System specifications

System Details

- Windows 10 - Python version 3.9.13: - Installed modules (provide output from `pip list`): ``` PASTE HERE ```

LaTeX details

+ LaTeX distribution (e.g. TeX Live 2020): + Installed LaTeX packages:

FFMPEG

Output of `ffmpeg -version`: ``` ffmpeg version 6.0-essentials_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers built with gcc 12.2.0 (Rev10, Built by MSYS2 project) configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libgme --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libtheora --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-librubberband libavutil 58. 2.100 / 58. 2.100 libavcodec 60. 3.100 / 60. 3.100 libavformat 60. 3.100 / 60. 3.100 libavdevice 60. 1.100 / 60. 1.100 libavfilter 9. 3.100 / 9. 3.100 libswscale 7. 1.100 / 7. 1.100 libswresample 4. 10.100 / 4. 10.100 libpostproc 57. 1.100 / 57. 1.100```

Additional comments

[tn3wman]

It seems to be an issue with the model or speaker I used. Simply using

self.set_speech_service(CoquiService())

seems to work ok.

[osolmaz]

There have also been simplifications to CoquiService initialization in v0.3.1. Closing this now, feel free to open a new one if you encounter any issues.