metabase cdn changes

[deepakkashyap3013]

• Added scripts to Upload fresh frontend build and move the current build to the backup folder.
• Minor changes in webpack.config file
• yarn build-s3Upload is the script to be run for s3 Upload
• then follow the steps to Build an image: https://github.com/dapplooker/devops/blob/main/src/setup/analyzer-build.md
• Run the image using this command docker run -p 3000:3000 --rm --name <container_name> <imageId>