* Import files from old PR #15329
* Improvements
* hide uwp non-windows (#13637)
* update debug tool tip
* fix spelling and comments
* disable tool tip
* fix doc links
* remove obsolete using
* Update docs
* fix spelling
* rename elevation property and test method
* Add property <DoesExist> to WindowProcess class
* Close process handles correctly if not used anymore
* cleanup coed
* fix bug with sticky notes process
* add window class to tool tip
* small change
* make nativeMethods static class
* fix broken uwpApp property of WindowProcess class
* rename method
* Revert making NativeMethods class static. It contains instance members.
* improve loggign
* fix merge mistakes
* fixes
* remove obsolete delegate
* Improve SearchController to speed up search (#15561)
* add <IsShellProcess> property to <WindowProcess> class
* reorder code
* disable debug tool tip
* Update devdocs
* remove obsolete event handler
* update var name
