The first iteration has enough SIDs to display simple documents, but
when trying more and more documents we started to need more of these
SIDs to be properly defined. This is a copy/paste exercise from the CFF
document, which is tedious, so it will continue in small drops.
This commit fills all the gaps until SID 228, which covers all the
ISOAdobe space, and should be enough for most use cases. Since this is a
continuous space starting at 0, we now use an Array instead of a Map to
store these names, which should be more performant. Also to simplify
things I've moved the Array out of the CFF class, making it a simpler
static variable, which allows us to use template type deduction.
The Compat Font Format specification (Adobe's Technical Note #5176) is
used by PDF's Type1C fonts to store their data. While being similar in
spirit to PS1 Type 1 Font Programs, it was designed for a more compact
representation and thus space reduction (but an increment on
complexity). It also shares most of the charstring encoding logic, which
is why the CFF class also inherits from Type1FontProgram.
This initial implementation is still lacking many details, e.g.:
* It doesn't include all the built-in CFF SIDs
* It doesn't support CFF-provided SIDs (defaults those glyphs to the
space character)
* More checks in general
