Security patching of lodash.

Security patching of lodash.

https://code.visualstudio.com/api/working-with-extensions/testing-extension#migrating-from-vscode

This release introduces CI/CD to the project by using GitHub Actions to deliver new extension updates to VSCode Marketplace, and proper testing of the PRs.
Some dependencies have been upgraded due to known CVEs.

Improve the prototype to support YAML CloudFormation templates.

First working release that works as a proof of concept.