Add Rakefile

.gitignore

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+# JetBrains
+.idea
+
+# Vim generated files
+*~
+*.swp
+
+# Ignore all logfiles and tempfiles.
+/log/*
+/tmp/*
+!/log/.keep
+!/tmp/.keep
+
+# Re-Volt Paintkits
+*.psd
+*.pdn
+*.xcf

Gemfile

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+source 'https://rubygems.org'
+
+ruby '2.7.3'
+
+gem 'rake', '~> 13.0', '>= 13.0.6'
+

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    rake (13.0.6)
+
+PLATFORMS
+  x64-mingw32
+
+DEPENDENCIES
+  rake (~> 13.0, >= 13.0.6)
+
+BUNDLED WITH
+   2.2.26

Rakefile

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+task :default => [:clean]
+
+task :clean do
+  deleted_bytes = 0.0.to_f
+
+  # Remove unnecessary directories
+  delete_dir = %w[extra paintkit additional]
+  Dir[File.join('cars', '**', '*')].select { |p| File.directory? p }.each do |d|
+    next unless delete_dir.include? File.basename(d)
+
+    puts "Removing #{d}/"
+    subdirs = Dir[File.join(d, '**', '*')].reject { |p| File.directory? p }
+    i = 0
+    subdirs.each do |f|
+      branch = if subdirs.size == i + 1
+                 '  └──'
+               else
+                 '  ├──'
+               end
+
+      deleted_bytes += File.size(f).to_f
+      puts("#{branch} #{f} (#{'%.2f' % (File.size(f).to_f / 2**20)} MB) ...")
+      i += 1
+    end
+
+    FileUtils.remove_dir(d) if File.exist?(d)
+  end
+
+  # Remove unnecessary files
+  delete_ext = %w[.psd .pdn .xcf]
+  Dir[File.join('cars', '**', '*')].reject { |p| File.directory? p }.each do |f|
+    next unless delete_ext.include? File.extname(f)
+
+    deleted_bytes += File.size(f).to_f
+    puts("Removing #{f} (#{'%.2f' % (File.size(f).to_f / 2**20)} MB) ...")
+    File.delete(f) if File.exist?(f)
+  end
+
+  if deleted_bytes == 0.0
+    puts 'Nothing to remove.'
+  else
+    puts "Total removed: #{'%.2f' % (deleted_bytes / 2**20)} MB."
+  end
+
+  puts 'OK.'
+end