Allow to set more options

[h3ndrk]

Thanks for the great bindings library!

For my project, I need more control over the options of the phoneme generation. Therefore this PR adds more options to the PhonemeGenOptions::Standard enum variant.

This repository seems to not be formatted according to standard rustfmt which might introduce some unchanged lines that were not intended. Please consider to reformat this repository to make contributing easier. I did not format the lib.rs to reduce the number of change lines in this PR. 😃

Feel free to discuss or propose alternatives for setting the options more easily from the outside. Thanks in advance!

[GnomedDev]

Right then, I've formatted the repo using rustfmt and updated some dependencies, can you rebase?

[h3ndrk]

Thanks for formatting! 🎉

The files in tests/ also needed formatting. I did that in another commit, but I can drop it if you want. 😃

Should be rebased.

[GnomedDev]

Thanks, although I have concerns that most of these text modes are going to be unusable due to the fact that &str is always UTF8 encoded?

[h3ndrk]

That might be true. I only added all available variants without testing.

I also thought whether we want to exclude Mbrola because there is a dedicated enum variant in PhonemeGenOptions. 🤔

Do you want to be close to upstream or only expose what is implemented and provide a single way to do things?

[GnomedDev]

I want to smooth over the weirdness in the C api, so I'd prefer to only expose what works.

[h3ndrk]

Fine for me. Better now? Only UTF-8 is supported in the TextMode because the others might use ISO-8859 or some wide character formats.

[GnomedDev]

Looks good to me!