Start menu suggestions: announce result details (#10340)
* SearchUI app module: update copyright headers, indentation, add introductory docstring.
* SearchUI: recognize search results in recent Windows 10 feature updates with redesigned Windows Search. Re #10329.
In 2019, Windows Search has been redesigned. Although the new UI appeared in Version 1903 (May 2019 Update), it was made available to older Windows 10 releases with a server-side update. Compared to old UI, suggestions are grouped by categories - instead of all results grouped under a single list, results list is now populated with search categories, with each category in turn hosting a list of results. This latter control isn't recognized as suggestions list, leading to NVDA not announcing item detalis as it used to.
Therefore recognize the new UI and recognize actual results so NVDA can announce result details. This results in repetitions, which will be corrected with a accompanying work dealing with search field caret event changes.
* Lint: whitespace
* UIA.findOverlayClasses: add a comment on 2019 Windows Search results due to UI redesign.
Commented by Leonard de Ruijter (Babbage): because not all suggestions list items are not part of results list (some are inside another item such as results from Windows Search in 2019 due to UI changes), document this fact for clarity.
