Add benchmark viewer

performance/benchmarks/fizzbuzz_10000.rb

@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+Benchmarks.define('fizzbuzz_10000', Class.new do
+  TEMPLATE = <<~LIQUID
+  {% for i in (1..10000) %}{{ i }}
+  {% endfor %}
+  LIQUID
+
+  def compile
+    @parsed = Liquid::Template.parse(TEMPLATE)
+  end
+
+  def render
+    @parsed.render
+  end
+end.new)

performance/benchmarks/theme_runner.rb

@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+require_relative '../theme_runner'
+
+Benchmarks.define('theme_runner', ThemeRunner.new)