The PDF plotter's renderWord function now properly handles tab characters
within text. Previously, tabs were passed to HarfBuzz or the stroke font
encoder which would render them as zero-width or small-width glyphs,
causing text alignment issues.
The fix splits text at tab boundaries and calculates proper tab stop
positions using the same algorithm as the font rendering code (TAB_WIDTH
= 4 * 0.6 font units), advancing the cursor to the next tab stop for
each tab character encountered.
Fixes https://gitlab.com/kicad/code/kicad/-/issues/22606
Creates a Type-3 representation of our stroke font, embeds it in the PDF
and then causes text to be represented in that font.
This prevents the need for over-stroking and keeps our PDFs searchable
and accessible
Seth Hillbrand