feat(cube-doctor): add add-set-cubicweb-max-version

.cube-doctor.yml

----
 rules:
@@ -2,3 +1,4 @@
 rules:
+  add-deb-publish: null
   add-new-rules:
     project-kind: cubicweb-cube
@@ -3,8 +3,8 @@
   add-new-rules:
     project-kind: cubicweb-cube
-  fix-README:
-  add-pytest-deprecated-warnings:
-  add-pypi-publish:
-  add-deb-publish:
-  add-yamllint:
-  update-licence-dates:
+  add-pypi-publish: null
+  add-pytest-deprecated-warnings: null
+  add-yamllint: null
+  fix-README: null
+  set-cubicweb-max-version: null
+  update-licence-dates: null