Badge Generator Versions Save

• Refactor badges module - the src/core/badges.ts module has a mix of Shields API logic, URL changes and appearance such as markdown formatting. These were split into separate modules.
• Add Go badge to catalogue
• Update tests
• Style changes
• Doc changes

Also updated and added to tests and explained the markdown progression in docs/history.md doc.

Changes:

• Upgrade dependencies.
• Add cache to CI flow.
• Improve docs.
• Use base URL in two places including a link on the text logo and the hero image banner
• The hero image banner is now served from assets.

Remove the version that is not maintained and use a fork published on NPM.

Fix a syntax bug in rendering Catalogue badges without color.

A refactor made Catalogue easier to work with.

Plus tests added to ensure that any error is raised if Catalogue badges have bad fields.