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_border0.svg

@@ -5,7 +5,7 @@
  <g id="barcode" fill="#000000">
   <rect x="0" y="0" width="744" height="354" fill="#FFFFFF"/>
   <path d="M48 0h4.8v307.88h-4.8ZM57.6 0h4.8v307.88h-4.8ZM67.2 0h4.8v307.88h-4.8ZM76.8 0h14.4v307.88h-14.4ZM105.6 0h4.8v307.88h-4.8ZM115.2 0h14.4v307.88h-14.4ZM134.4 0h4.8v307.88h-4.8ZM153.6 0h14.4v307.88h-14.4ZM172.8 0h4.8v307.88h-4.8ZM192 0h4.8v307.88h-4.8ZM201.6 0h4.8v307.88h-4.8ZM211.2 0h14.4v307.88h-14.4ZM240 0h14.4v307.88h-14.4ZM259.2 0h14.4v307.88h-14.4ZM288 0h4.8v307.88h-4.8ZM297.6 0h4.8v307.88h-4.8ZM307.2 0h4.8v307.88h-4.8ZM326.4 0h4.8v307.88h-4.8ZM336 0h4.8v307.88h-4.8ZM355.2 0h14.4v307.88h-14.4ZM374.4 0h14.4v307.88h-14.4ZM403.2 0h4.8v307.88h-4.8ZM412.8 0h4.8v307.88h-4.8ZM422.4 0h14.4v307.88h-14.4ZM441.6 0h14.4v307.88h-14.4ZM460.8 0h4.8v307.88h-4.8ZM480 0h4.8v307.88h-4.8ZM499.2 0h14.4v307.88h-14.4ZM518.4 0h4.8v307.88h-4.8ZM528 0h4.8v307.88h-4.8ZM547.2 0h4.8v307.88h-4.8ZM556.8 0h14.4v307.88h-14.4ZM585.6 0h14.4v307.88h-14.4ZM604.8 0h4.8v307.88h-4.8ZM624 0h14.4v307.88h-14.4ZM643.2 0h4.8v307.88h-4.8ZM662.4 0h4.8v307.88h-4.8ZM672 0h14.4v307.88h-14.4ZM691.2 0h4.8v307.88h-4.8Z"/>
-  <text x="372" y="341.48" text-anchor="middle" font-family="Helvetica, sans-serif" font-size="33.6">
+  <text x="372" y="341.48" text-anchor="middle" font-family="Arimo, Arial, sans-serif" font-size="33.6">
    92123209671459
   </text>
  </g>