refactor: simplify directory detection logic in downloadAndSet function

Co-authored-by: Copilot <copilot@github.com>

feat: add GitHub Actions workflow for automated cross-platform builds…

… and releases

Merge branch 'main' of https://github.com/Programmercito/switcher-ver…

…sion-tools

Merge pull request #3 from Programmercito/copilot/fix-release-deploym…

…ent-issue

enhance listCurrent function to support 'ist' command and update outp…

…ut format for available installations

add README.md with project overview, features, installation instructi…

…ons, and usage examples