Add NBM in SonarCloud

Here is an example: https://github.com/nuxeo/nuxeo-connect-priv/commit/a57136c2e958ff333bcd178a4422d15c102aba73

But a better example is at the root pom of Nuxeo.

• you will get a key corresponding to the root POM: `com.nuxeo.brand.management:nuxeo-brand-management-parent`
• setup a job for deployment