src/CharmBypass-{Bold,Regular}.sfd: new font source files

Include the FontForge source files for the "CharmBypass-Bold" and
"CharmBypass-Regular" fonts. This will eventually allow us to build
the woff2 fonts on-the-fly.

These fonts were created from the letterforms used in the CharmPass
app. Copyright law in the United States generally does not protect
typefaces themselves; it protects only fonts, which are a particular
programmatic digital representation of a typeface. Since I have copied
only the letterforms, distributing the fonts (which are my own
creation) should not run afoul of the law. But as always when it comes
to legal matters: IANAL, YOLO, IDGAF.