Add comprehensive integration test suite and CI workflow for gh-models CLI#90

pelikhan with Copilot wants to merge 158 commits into

maingithub/gh-models:mainfrom

copilot/fix-c18cc30c-9836-4cdc-ac69-f4be9d6cc6c2github/gh-models:copilot/fix-c18cc30c-9836-4cdc-ac69-f4be9d6cc6c2Copy head branch name to clipboard