Merge branch 'develop' into api-v1-migration

.gitlab-ci.yml

+stages:
+
+- lint
+
+lint-job:
+  stage: lint
+  image: 
+    name: stoplight/spectral:latest
+    entrypoint: [""]
+  script:
+    - spectral lint reference/*.yml reference/*.json
\ No newline at end of file

.spectral.yml

 extends:
   - spectral:oas
   #  - https://italia.github.io/api-oas-checker/spectral.yml
-  #  - https://italia.github.io/api-oas-checker/spectral-generic.yml
+  - https://italia.github.io/api-oas-checker/spectral-generic.yml
   - https://italia.github.io/api-oas-checker/spectral-security.yml
+rules:
+  no-default-additionalProperties: hint
+  string-maxlength: hint
+  typed-enum: error
+  paths-status: warn
+  response-with-json-object: error