fix: handle windows paths in umd-to-esm#103

RYGRIT wants to merge 2 commits intonpmx-dev:mainnpmx-dev/vscode-npmx:mainfrom

RYGRIT:fix/plugin-umd-to-esm-cleanRYGRIT/vscode-npmx:fix/plugin-umd-to-esm-cleanCopy head branch name to clipboard