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/itf14.svg

@@ -5,7 +5,7 @@
  <g id="barcode" fill="#000000">
   <rect x="0" y="0" width="793" height="402" fill="#FFFFFF"/>
   <path d="M72 24h4.8v307.88h-4.8ZM81.6 24h4.8v307.88h-4.8ZM91.2 24h4.8v307.88h-4.8ZM100.8 24h14.4v307.88h-14.4ZM129.6 24h4.8v307.88h-4.8ZM139.2 24h14.4v307.88h-14.4ZM158.4 24h4.8v307.88h-4.8ZM177.6 24h14.4v307.88h-14.4ZM196.8 24h4.8v307.88h-4.8ZM216 24h4.8v307.88h-4.8ZM225.6 24h4.8v307.88h-4.8ZM235.2 24h14.4v307.88h-14.4ZM264 24h14.4v307.88h-14.4ZM283.2 24h14.4v307.88h-14.4ZM312 24h4.8v307.88h-4.8ZM321.6 24h4.8v307.88h-4.8ZM331.2 24h4.8v307.88h-4.8ZM350.4 24h4.8v307.88h-4.8ZM360 24h4.8v307.88h-4.8ZM379.2 24h14.4v307.88h-14.4ZM398.4 24h14.4v307.88h-14.4ZM427.2 24h4.8v307.88h-4.8ZM436.8 24h4.8v307.88h-4.8ZM446.4 24h14.4v307.88h-14.4ZM465.6 24h14.4v307.88h-14.4ZM484.8 24h4.8v307.88h-4.8ZM504 24h4.8v307.88h-4.8ZM523.2 24h14.4v307.88h-14.4ZM542.4 24h4.8v307.88h-4.8ZM552 24h4.8v307.88h-4.8ZM571.2 24h4.8v307.88h-4.8ZM580.8 24h14.4v307.88h-14.4ZM609.6 24h14.4v307.88h-14.4ZM628.8 24h4.8v307.88h-4.8ZM648 24h14.4v307.88h-14.4ZM667.2 24h4.8v307.88h-4.8ZM686.4 24h4.8v307.88h-4.8ZM696 24h14.4v307.88h-14.4ZM715.2 24h4.8v307.88h-4.8ZM0 0h792v24h-792ZM0 331.88h792v24h-792ZM0 24h24v307.88h-24ZM768 24h24v307.88h-24Z"/>
-  <text x="396" y="389.48" text-anchor="middle" font-family="Helvetica, sans-serif" font-size="33.6">
+  <text x="396" y="389.48" text-anchor="middle" font-family="Arimo, Arial, sans-serif" font-size="33.6">
    92123209671459
   </text>
  </g>