Add task to generate and categorize syntax highlight data

Author: rossta

Gemfile

@@ -70,6 +70,7 @@ group :test do
 end
 
 group :development, :test do
+  gem "css_parser", require: false # A pure Ruby CSS parser based on the CSS Syntax Level 3 specification [https://github.com/rgrove/crass]
   gem "brakeman", require: false # A static analysis security vulnerability scanner for Ruby on Rails applications [https://github.com/presidentbeef/brakeman]
   gem "bundle-audit", require: false # Patch level verification for Bundler [https://github.com/rubysec/bundler-audit]
   gem "debug", platforms: %i[mri windows] # See https://guides.rubyonrails.org/debugging_rails_applications.html#debugging-with-the-debug-gem

Gemfile.lock

@@ -125,6 +125,8 @@ GEM
       bigdecimal
       rexml
     crass (1.0.6)
+    css_parser (1.17.1)
+      addressable
     cuprite (0.15.1)
       capybara (~> 3.0)
       ferrum (~> 0.15.0)
@@ -550,6 +552,7 @@ DEPENDENCIES
   capybara
   color_conversion
   commonmarker
+  css_parser
   cuprite
   debug
   device_detector