[misc-uiautomation] Add reference tests for uiautomation 

Impacted tests (approved): new 98, update 0, delete 0
Unit test platform: Chromium
Unit test summary: pass 98, fail 0, block 0
Please remove csswg/; csswg means all files under this sub-directory are from https://github.com/w3c/csswg-test/