aem-mock: Dynamically resolve AEM-specific objects as SlingBindings properties

similar to SLING-7867 we should also dynamically resolve AEM-specific properties that are present in the scripting context in AEM, and thus also to Sling Models:

• componentContext

• editContext

• properties

• pageManager

• currentPage

• resourcePage

• pageProperties

• component

• designer

• currentDesign

• resourceDesign

• currentStyle