Publish npm package in the pipeline

[jackdomleo7]

Enhancement/maintenance description

• Refactor pipeline into a single yaml file
• Run npm publish only if on master branch, and if version in code is different to version in the npm registry
• npm update

Why is this enhancement/maintenance important?

Allows for automatic npm publishing of the package.

Covered test cases

N/A

Did you test on all major browsers?

• Chrome
• Firefox
• Edge
• Safari

Other details

N/A

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T&Cs

• I confirm I have read and understand the contributing guidelines
• I understand the work in this pull request will not be released straight away and will appear in a future release (if approved)
• I confirm the work in this pull request is true and valid to the best of my knowledge
• I have updated the README, features.md and codes.md files where applicable