[Feature]: Improvements for the configuration package and its documentation

[sdo-1A]

Context

In #1672 we mentioned the possibility of adding a linter rule and updating the documentation with the linters that we expose. The feature of the o3rWidget tag should also be mentioned in the documentation.

Proposal

• [ ] Linter rule: The field name id should not be used in the configuration, since we use this field in our internal implementation.
• [ ] Documentation: Mention that we expose a linter for the o3rCategories tag (docs/linter/eslint-plugin/rules/o3r-categories-tags.md)
• [ ] Documentation: Add the feature of the o3rWidget tag (and mention that we expose a linter for it too - docs/linter/eslint-plugin/rules/o3r-widget-tags.md)