[SYCL][E2E] Add functionality to split build and run of e2e tests#15728

ayylol wants to merge 26 commits intosyclintel/llvm:syclfrom

sycl-devops-pr/ayylol/e2e-splitintel/llvm:sycl-devops-pr/ayylol/e2e-splitCopy head branch name to clipboard