Add global resource notifications

Emit notifications to any resource of WildFly management model:

• resource-added - when a resource is added, it emits a resource-added notification
• resource-removed - when a resource is removed, it emits a resource-removed notification
• attribute-value-written - when a write-attribute operation is performed successfully on a resource, it emits a attribute-value-written notification. The notification's data field contains the following information:
• name - String - the name of the attribute
• old-value - the detyped representation of the previous value of the attribute
• new-value - the detyped representation of the new value