Combine hyphenations into one package langsci-hyphens

[kopeckyf]

As we are beginning to support more and more languages, we will also need more and more hyphen informations.

It would be good to combine them in one package langsci-hyphens. Usage would then be

\usepackage{langsci-hyphens}
\usepackage[german,italian]{langsci-hyphens}

The first would load all hyphenations that are stored under general. The second would load general as well as those stored in german and italian.