feat: Enable JsonSchema creation and publishing

[Kieranties]

Description

Enables the creation and management of a JsonSchema for validation and intellisense in IDEs

Fixes #23 (Also to include #51 and #35)

Status:

• Schema can be generated on build
• Schema is used for model validation
• Hosting of schema in generated docs site
• Ensure latest release version can be accessed as '/schema/latest.json'
• Ensure latest pre-release version can be accessed as '/schema/unstable.json'
• Additional schema features (such as type checking) to be investigated
• Documentation to be updated matching casing from schema
• Reporting of validation errors (may require implementing Logging #9/Return different error messages for missing json as opposed to poorly formatted json #60)
• Tests

Change Type

• Documentation: Changes to docs are included
• Infrastructure: Changes to build scripts/non-deliverables
• Bug Fix: Fixes an issue in implementation
• New Feature: Adds new functionality in a non-breaking manner
• Breaking Change: Implements a fix or feature in a breaking manner

Quality

• Unit tests have been added/updated
• Local builds/testing are successful
• Code coverage has not decreased
• Code comments have been provided (where appropriate)
• Core styles have been followed
• Documentation has been added/updated