feat: Chinese (Simplified Han script) translation

Translation URL: https://hosted.weblate.org/projects/book-story/book-story-translation/zh_Hans/

Author: 大王叫我来巡山

app/src/main/res/values-zh-rCN/strings.xml

@@ -360,4 +360,5 @@
     <string name="horizontal_limiter_ruler_option">水平标尺</string>
     <string name="horizontal_limiter_ruler_thickness_option">尺子厚度</string>
     <string name="horizontal_limiter_dimming_option">变暗</string>
+    <string name="horizontal_limiter_option">水平限制器</string>
 </resources>