Portcheckerio

- Add GitHub action to build images when new releases are tagged
- Add GitHub action to perform CodeQL Analysis and add badge to README
- Bump emotion/babel-plugin from 11.3.0 to 11.7.1
- Bump svgr/webpack from 6.1.1 to 6.1.2
- Bump postcss from 8.4.4 to 8.4.5
- Bump emotion/react from 11.7.0 to 11.7.1
- Bump react-router-dom from 6.0.2 to 6.1.1

- Resolve console warning about undefined DEFAULT_PORT var in production

- Add dependabot monitoring to repository
- Allow default port to be defined as an environment variable
- Make Dockerfile serve from Nginx instead of webpack serve to improve performance
- Separate development and production environments and add docker-compose files

- Migrate from NPM to Yarn to resolve dependencies
- Upgrade react-router-dom to v6

- Update package.json dependencies
- Improve webui styling for when the users browser does not have JavaScript enabled

- Move users IP detector (for form auto population) to Cloudflare DNS to avoid some spam filters
- Improve styling for pending/in-progress tasks
- Update UI to use improved Lambda API task