Support YAML based ConfigSchema in the CLI

[rannn505]

Suggestion

• Users can use the --schema flag to point to a YAML file that works just like the current supported JSON file
• Allow passing a path/to/schema.cfgu.yaml to the --schema flag of all the commands that support it
• The structure of the new YAML-based schema mirrors that of the existing JSON-based schema

Motivation

YAML is a widely-used format known for its readability and ease of use. By supporting YAML-based ConfigSchema, we can enhance the flexibility and user-friendliness of our CLI, catering to a broader range of user preferences and workflows.

Context

Suggestions:

• Add an helper method at the BaseCommand - getSchemaInstanceBySchemaFlag to handle all schema files types - same as for the stores
• Use js-yaml to parse the file contents - https://npmtrends.com/js-yaml-vs-yaml-vs-yamljs
• Let the ConfigSchema Constructor logic form the SDK to validate the actual Key:Cfgu Dict

References: