Merge pull request #253 from w-ahmad/feat/conditional_styling

feat: Implemented Conditional Cell Styling

fix measure issue when content is not laoded

Update TableViewComboBoxColumn.cs

Update cd-build.yml

code cleanup

Update README.md

Update WinUI.TableView.csproj

Merge pull request #104 from w-ahmad/RemoveSampleApp

Remove sample app

fixed arrow keys cycle navigation

Merge pull request #47 from w-ahmad/nullabe_refTypes

make dependency reference type properties as nullable