Add --poll option that should help with auto-rebuild on Windows Docker

Hi there!

If you're experiencing problems with auto-rebuilding your CSS using --watch on Windows Docker - try to add --poll along with the --watch option:

php bin/console tailwind:build --watch --poll

TailwindCSS will use polling instead of filesystem events when watching.

What's Changed

• Windows Docker and Tailwind watch mode by @Mitraniom in #57

New Contributors

• @Mitraniom made their first contribution in #57

Full Changelog: v0.5.2...v0.5.3