Support Swedish braille code

[bertfrees]

To do:

• [x] Integrate Swedish liblouis table or Dotify translator
• [x] Higher level translator component

Depends on:

• [ ] https://github.com/snaekobbi/liblouis/issues/3
• [x] https://github.com/snaekobbi/issues/issues/14

[bertfrees]

Higher level translator component: see https://github.com/snaekobbi/pipeline-mod-mtm/commit/e34a62d43c83924e79d8c3d9e4ee5619502adba6.

The Swedish Dotify translator is used for pre-translation.

Inline formatting is currently not supported, but it could be if I make use of the translate(String text, TextAttribute attributes) method of BrailleTranslator. (Pre-)hyphenation is currently not supported because of the way line breaking is done in Dotify.

Alternatively, if we don't want pre-translation we should be able to accomplish that with a custom CSSStyledDocumentTransform and some adjustments to dotify:format.

[joeha480]

I prefer not using pre-translation if possible, because then I can add support for non-standard hyphenation and also line breaking aware translation

[bertfrees]

See https://github.com/snaekobbi/pipeline-mod-braille/issues/51

[bertfrees]

This can be closed.

The pre-translation path now supports hyphenation (https://github.com/daisy/pipeline-mod-braille/issues/44). It does still not support text-level formatting, but I guess that is OK for now. When we need it (e.g. for e-braille or for the edit format) we'll create a new issue.

The translation-while-formatting path is now also supported (https://github.com/snaekobbi/pipeline-mod-braille/issues/51).