Add support for translations

src/invidious/helpers/i18n.cr

@@ -0,0 +1,23 @@
+def load_locale(name)
+  return JSON.parse(File.read("locales/#{name}.json")).as_h
+end
+
+def translate(locale : Hash(String, JSON::Any) | Nil, translation : String, text : String | Nil = nil)
+  if !locale
+    return translation
+  end
+
+  # if !locale[translation]?
+  #   puts "Could not find translation for #{translation}"
+  # end
+
+  if locale[translation]? && !locale[translation].as_s.empty?
+    translation = locale[translation].as_s
+  end
+
+  if text
+    translation = translation.gsub("`x`", text)
+  end
+
+  return translation
+end