Switch to use Github actions instead of Jenkins

[mderazon]

On each PR:

• Run Prettier
• Run ng lint
• Run tests

Nice to have, after merging to master

• Build and package the project as npm package (npm run package)
• Create a release tag for the version so it appears in the release section in Github repo
• Have the changes automatically described in the release section
• Have the package tgz file added to the release section
• Maybe publish to npm (nice to have)

Resources:

• https://github.com/conventional-changelog/commitlint
• https://github.com/marketplace/actions/automated-releases-for-npm-packages
• https://docs.npmjs.com/cli/publish