Support for multiple languages

[dipzza]

I am working on a document with multiple languages, for now I'm dealing with it ignoring environments and ignoring everything except the main language.

However, having the languages already specified on latex with a simple syntax with the babel package i think textidote using the languages specified would be so much more convenient.

I understand this conflicts with #56 and can be difficult. But as babel is quite standardized and has a simple syntax maybe is worth to consider it.

Default language for text would be specified like:
\usepackage[defaultlanguage, otherlanguage1, otherlanguage2]{babel}

or

\usepackage[otherlanguage1, main=defaultlanguage, otherlanguage2]{babel}

And when the text is on a different language from the default it would be wrapped on enviroments:

\begin{otherlanguage}{otherlanguage1}
Text written on otherlanguage1
\end{otherlanguage}

[sylvainhalle]

At first glance I think it is reasonable, as all we need to remember is the current language for a given line (either the default or that of the last otherlanguage instruction).