Applications: Add Presenter

This version can already:
- load all of the defined file format except for the image type and the
  frame-specific stuff
- navigate frames and slides (though frames are mostly stubbed out)
- display text with various common settings
- displays text with various fitting and scaling methods
- scale and position objects correctly no matter the window size

Userland/Applications/Presenter/CMakeLists.txt

@@ -0,0 +1,17 @@
+serenity_component(
+    Presenter
+    RECOMMENDED
+    TARGETS Presenter
+    DEPENDS ImageDecoder FileSystemAccessServer
+)
+
+
+set(SOURCES
+    main.cpp
+    Presentation.cpp
+    PresenterWidget.cpp
+    Slide.cpp
+    SlideObject.cpp
+)
+serenity_app(Presenter ICON app-display-settings)
+target_link_libraries(Presenter PRIVATE LibImageDecoderClient LibGUI LibGfx LibFileSystemAccessClient LibCore LibMain)