Added basic UI

querying/CMakeLists.txt

querying/resources.qrc

querying/resources/add-tab.png

querying/resources/close-hover.png

querying/resources/close.png

querying/resources/main-icon.png

querying/resources/settings.png

querying/resources/swap.png

querying/src/CollectionFetcher.cpp

querying/src/CollectionFetcher.h

querying/src/main.cpp

querying/src/ui/forms/mainform.cpp

querying/src/ui/forms/mainform.h

querying/src/ui/forms/mainform.ui

querying/src/ui/widgets/textedit.cpp

querying/src/ui/widgets/textedit.h