Auto deploy workflow

[lushkant]

Things to do

• Whether the BUILD_DIR env set in action file is working correctly or not.
• Set WordPress SVN secrets in environment variables

Closes #623

[what-the-diff[bot]]

• Added a new workflow to deploy the plugin on WordPress.org
• Updated all assets and screenshots for the plugin listing page
• Fixed some issues with translations not loading properly in Elementor editor mode, as well as fixed an issue where strings were being sent twice to app (once from PHP and once from JS) causing duplicates when using multiple languages at same time
• Removed @babel/plugin-proposal-class-properties comma after last item in array so it doesn't break build process due to ESLint error: https://github.com/analogwp/templates/issues/1023#issuecomment-717098981

[lushkant]

@mauryaratan this is ready for review, lemme know if anything