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/code128_rotate90.svg

@@ -5,7 +5,7 @@
  <g id="barcode" fill="#000000">
   <rect x="0" y="0" width="286" height="644" fill="#FFFFFF"/>
   <path d="M45.36 0h240v9.6h-240ZM45.36 14.4h240v4.8h-240ZM45.36 28.8h240v4.8h-240ZM45.36 52.8h240v9.6h-240ZM45.36 67.2h240v14.4h-240ZM45.36 96h240v4.8h-240ZM45.36 105.6h240v4.8h-240ZM45.36 120h240v9.6h-240ZM45.36 148.8h240v4.8h-240ZM45.36 158.4h240v4.8h-240ZM45.36 182.4h240v9.6h-240ZM45.36 196.8h240v4.8h-240ZM45.36 211.2h240v4.8h-240ZM45.36 220.8h240v19.2h-240ZM45.36 249.6h240v4.8h-240ZM45.36 264h240v9.6h-240ZM45.36 278.4h240v9.6h-240ZM45.36 297.6h240v9.6h-240ZM45.36 316.8h240v9.6h-240ZM45.36 331.2h240v14.4h-240ZM45.36 360h240v4.8h-240ZM45.36 369.6h240v4.8h-240ZM45.36 379.2h240v9.6h-240ZM45.36 398.4h240v4.8h-240ZM45.36 422.4h240v19.2h-240ZM45.36 451.2h240v4.8h-240ZM45.36 465.6h240v4.8h-240ZM45.36 475.2h240v4.8h-240ZM45.36 489.6h240v19.2h-240ZM45.36 513.6h240v4.8h-240ZM45.36 528h240v4.8h-240ZM45.36 542.4h240v14.4h-240ZM45.36 561.6h240v9.6h-240ZM45.36 580.8h240v9.6h-240ZM45.36 604.8h240v14.4h-240ZM45.36 624h240v4.8h-240ZM45.36 633.6h240v9.6h-240Z"/>
-  <text x="11.76" y="321.6" text-anchor="middle" font-family="Helvetica, sans-serif" font-size="33.6" transform="rotate(90,11.76,321.6)">
+  <text x="11.76" y="321.6" text-anchor="middle" font-family="Arimo, Arial, sans-serif" font-size="33.6" transform="rotate(90,11.76,321.6)">
    This Text
   </text>
  </g>