docs: document DB_SSLMODE as a required Neon deployment secret

fix: use valid HF colorFrom/colorTo values

ci: fix README conflict, add deploy workflow

Merge branch 'main' of https://github.com/code-futurealgos/LicenseManager

ci: add GitHub Actions deploy pipeline to HF Spaces

Clean up README.md by removing unnecessary sections

feat(ui) : updated UI & UX for best user friendly experience