Actually change SVG font to "Arimo, Arial, sans-serif" ([607e4ed])

Allow `--embedfont` for non-EAN/UPC SVG also (& update GUI)
SVG: add "fonts/normal_woff2.h"; use array syntax for it &
  "fonts/upcean_woff2.h" to avoid large strings
GUI: embed Arimo (via "fonts/normal_ttf.h"), same as OCRB
Change textgap max 5X -> 10X
README: make list of barcodes 2-col table for readability
win32/README: note Visual Studio 2022 re CMake

docs/images/dpleit.svg

@@ -5,7 +5,7 @@
  <g id="barcode" fill="#000000">
   <rect x="0" y="0" width="648" height="391" fill="#FFFFFF"/>
   <path d="M0 0h4.8v345.6h-4.8ZM9.6 0h4.8v345.6h-4.8ZM19.2 0h4.8v345.6h-4.8ZM28.8 0h14.4v345.6h-14.4ZM57.6 0h4.8v345.6h-4.8ZM67.2 0h14.4v345.6h-14.4ZM86.4 0h4.8v345.6h-4.8ZM105.6 0h14.4v345.6h-14.4ZM124.8 0h4.8v345.6h-4.8ZM144 0h4.8v345.6h-4.8ZM153.6 0h4.8v345.6h-4.8ZM163.2 0h14.4v345.6h-14.4ZM192 0h14.4v345.6h-14.4ZM211.2 0h14.4v345.6h-14.4ZM240 0h4.8v345.6h-4.8ZM249.6 0h4.8v345.6h-4.8ZM259.2 0h4.8v345.6h-4.8ZM278.4 0h4.8v345.6h-4.8ZM288 0h4.8v345.6h-4.8ZM307.2 0h14.4v345.6h-14.4ZM326.4 0h14.4v345.6h-14.4ZM355.2 0h4.8v345.6h-4.8ZM364.8 0h4.8v345.6h-4.8ZM374.4 0h14.4v345.6h-14.4ZM393.6 0h14.4v345.6h-14.4ZM412.8 0h4.8v345.6h-4.8ZM432 0h4.8v345.6h-4.8ZM451.2 0h14.4v345.6h-14.4ZM470.4 0h4.8v345.6h-4.8ZM480 0h4.8v345.6h-4.8ZM499.2 0h4.8v345.6h-4.8ZM508.8 0h14.4v345.6h-14.4ZM537.6 0h14.4v345.6h-14.4ZM556.8 0h4.8v345.6h-4.8ZM576 0h14.4v345.6h-14.4ZM604.8 0h4.8v345.6h-4.8ZM614.4 0h4.8v345.6h-4.8ZM624 0h14.4v345.6h-14.4ZM643.2 0h4.8v345.6h-4.8Z"/>
-  <text x="324" y="379.2" text-anchor="middle" font-family="Helvetica, sans-serif" font-size="33.6">
+  <text x="324" y="379.2" text-anchor="middle" font-family="Arimo, Arial, sans-serif" font-size="33.6">
    92123.209.671.456
   </text>
  </g>