Add-ons SVG Template by Xon 1.6.1

• Fix internal server error being generated instead of a 404 when requesting an invalid svg

This add-on is now avaliable on atelieraphelion.com

• Require php 7.2+
• Require StandardLib v1.18.0+
• If using resvg support, recommend updating to v0.35.0.
  Pre-compiled linux x86_64 binary has been made available here.
  Compiled on CentOS 7, works on Ubuntu 18.04/20.04/22.04
• Document using resvg v0.35.0+ with "CLI - Pipe" mode, which avoid temporary files when converting SVGs to PNGs
  Example using resvg v0.35.0+, configure CLI - Pipe command with.
• Code:

  /usr/local/bin/resvg --quiet --resources-dir=/tmp/ - -c

• Fix SVG template validation was broken which could result in preventing adding a language or style from working correctly (or rebuilding master data)