Bugfix for dependent apps not working properly

Get application instance and application dependencies

This releas makes the NetDaemon support to get singleton references to other running instances of an app.

var lightManagerApp = GetApp("light_manager");

this also requires support to do dependencies in yaml config

app:
   class: MyApp
   dependencies:
      - light_manager

Camera fluent API support

In the effort to get more specific support for enitity domains in the fluent api, the camera is now added. Also it is first of many refactorings of the fluent API to make it simpler and easier to maintain.

The autogenerated camera entities will now use this interface instead.

Sample below:

await Camera("camera.camera1")
         .Snapshot("/config/www/snapshots/cam1.jpg")
         .ExecuteAsync();