Implement `direction` property (#906)
1<test name="measure_root__content_box_rtl" use-rounding="true">
2 <viewport width="max-content" height="max-content"/>
3 <input>
4 <text box-sizing="content-box" direction="rtl">
5 HHHHHH
6 </text>
7 </input>
8 <expectations>
9 <node x="0" y="0" width="60" height="10"/>
10 </expectations>
11</test>