v1.2.1 A new hope

What's Changed

• Avoid duplicating images when building distribution
• Enabled HTTPS for live-server
• Replaced relative to an absolute path for resources
• Removed vulnerable devdependencies:
  -- live-server
  -- sass-lint
• Added:
  -- clean-css-cli
  -- http-server
  -- stylelint
  -- uglify-js
• Removed obsolete scripts
• Refactoring demo building and using resources
• Added Snyk security scanner, excluded dirs with .dcignore
• Added copy to clipboard feature to code samples
• Refactor dev and prod build
• Created & refined npm scripts for testing, linting, developing and building
• Added stylelint package with configs and plugins
• A lot of scss restyling
• Applied stylelint rules
• Fix third-party deprecated package:sourcemap-codec
• Fix gen-mapping package URL in package-lock.json
• Update workflow actions
• Update release workflow :)