fuzz: add dictionary for fuzzing engines
fuzz: add dictionary for fuzzing engines

OSS-Fuzz already has such a dictionary since the original addition,
but this dictionary is missing some active sequences, has more fontnames
mixed in, some duplicates with eg only a leading backslash removed and
isn't organised.
Created a new more complete and organised dictionary.

libass/libass,libass/libass,astiob/libass,astiob/libass