Add comprehensive .github/copilot-instructions.md for SDLC_core repository onboarding#22

vinod0m merged 2 commits intomainSoftwareDevLabs/unstructuredDataHandler:mainfrom

copilot/fix-acb24ff4-28a6-4a2c-b4e2-301c42151b9eSoftwareDevLabs/unstructuredDataHandler:copilot/fix-acb24ff4-28a6-4a2c-b4e2-301c42151b9eCopy head branch name to clipboard