Possible contribution for adding support for latest version of hexgrad/Kokoro-82M

[EmaSuriano]

Hello to the maintainers of this great project 👋

I started testing the project but I found out that the current version of onnx kokoro does not support all the languages that I need.

While the latest version of the package includes the following languages:

🇺🇸 American English: 11F 9M
🇬🇧 British English: 4F 4M
🇯🇵 Japanese: 4F 1M
🇨🇳 Mandarin Chinese: 4F 4M
🇪🇸 Spanish: 1F 2M
🇫🇷 French: 1F
🇮🇳 Hindi: 2F 2M
🇮🇹 Italian: 1F 1M
🇧🇷 Brazilian Portuguese: 1F 2M

I have a working implementation but obviously for this I had to remove the logic that handles the onnx model and instead use the repository instructions:

# 1️⃣ Install kokoro
!pip install -q kokoro>=0.3.4 soundfile
# 2️⃣ Install espeak, used for English OOD fallback and some non-English languages
!apt-get -qq -y install espeak-ng > /dev/null 2>&1

The reason for creating this issue is to be aligned on the project perspective and roadmap. I can create a draft PR and we can iterate over it 👍