Add imaginary hello-world sample category - #694

Add imaginary hello-world sample category#694

Sun Haoran (haoranpb) with Copilot wants to merge 4 commits into

mainmicrosoft/BC-Bench:mainfrom

copilot/add-new-category-code-reviewmicrosoft/BC-Bench:copilot/add-new-category-code-reviewCopy head branch name to clipboard