feat: Improve `generateAttributeSchema()` attribute handling
feat: Improve `generateAttributeSchema()` attribute handling

Includes:
- Add handling of `regex` validation as Swagger `pattern`.
- Fix handling of `isInteger`.
- Fix handling of description; include both model/collection description
  **and** other provider Sails/Swagger descriptions.
- Fix handling over extra 'annotations' (e.g. autoincrement) which
  overwrote description.

theo4u/sails-hook-swagger-generator