NPU infra for 21.x#11

Maxim-Doronin wants to merge 3 commits intointel-staging:npu/release/21.xintel-staging/npu-compiler-llvm:npu/release/21.xfrom

Maxim-Doronin:md/release_21_infraMaxim-Doronin/npu-compiler-llvm:md/release_21_infraCopy head branch name to clipboard