Provide Q member property in DAOs

[artem-v-shamsutdinov]

Currently Q objects must be manually imported from underlying Apps. This prevents auto discovery of Entities in the same app and across all Apps imported by the project. That in turn goes against the "Developer Friendly" goal of AIRport and should be implemented soon after initial release.

Technically this will mean that at build time all included Apps will need to to be additionally pre-processed (they are already scanned) and all entity objects will need links created for their Q objects:

this.Q.MyEntity - link to a Q object that is internal to this application
this.Q.['domain-name']['app-name'].OtherAppEntity - link to a Q object in a related App.