The initial support compares characters in ZRCola font Private-Use-Area
to the characters obtained using Unicode combining characters. Those
which match sufficiently are arranged into a new transliteration.
As the ZRCola Composed to Unicode transliteration requires to be applied
_after_ ZRCola composition but UI applies additional transliterations
_before_ ZRCola composition, the ZRCola composition was reintroduced as
one of the transliterations. This allows configuring a custom
transliteration sequence.
Signed-off-by: Simon Rozman <simon@rozman.si>