[sfg_tribe_event_data] Shortcode

• Adding sfg_tribe_event_data shortcode. Previously this shortcode was found inside a Hello Elementor Child Theme.

roots/bedrock compatibility

• Updating checks for required Composer libraries. Check is now compabible with libraries installed at the root of a Bedrock-based project.
• Refactoring npm SCSS build and updating readme.txt to README.md generation with a pure node based setup.