Translations

[katajakasa]

Let's support translations.

• Use the existing DAT format. Filenames [LANGUAGE].DAT for base game translations, and [LANGUAGE]2.DAT for new openomf translations (e.g. ENGLISH.DAT and ENGLISH2.DAT)
• Some sort of source files for each language; then convert automatically in e.g. CI from source format to DAT
• Add Enum to openomf for each translation index so that we can track used strings in code. Only include enum if translation is used (?)
• Add language switch to the configuration menu
• Hunt down all the hardcoded strings in openomf, and move them to the language files.

[wertherhunt]

We have to remind the translators that the tournaments texts are in their respective files, so we have initialy more four files to translate.