searchProvider: load app dbus proxy synchronously
searchProvider: load app dbus proxy synchronously

And we will only load it on app result activation, so we don't create
30 proxy objects when the search process first gets hit with dbus requests
[endlessm/eos-sdk#3036]

endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib