Build: Embed application icons directly in the executables.

New serenity_app() targets can be defined which allows application
icons to be emedded directly into the executable. The embedded
icons will then be used when creating an icon for that file in
LibGUI.

Demos/Cube/CMakeLists.txt

@@ -2,5 +2,5 @@ set(SOURCES
     Cube.cpp
 )
 
-serenity_bin(Cube)
+serenity_app(Cube ICON app-cube)
 target_link_libraries(Cube LibGUI)

Demos/Eyes/CMakeLists.txt

@@ -3,5 +3,5 @@ set(SOURCES
     EyesWidget.cpp
 )
 
-serenity_bin(Eyes)
+serenity_app(Eyes ICON app-eyes)
 target_link_libraries(Eyes LibGUI LibGfx)

Demos/Fire/CMakeLists.txt

@@ -2,5 +2,5 @@ set(SOURCES
     Fire.cpp
 )
 
-serenity_bin(Fire)
+serenity_app(Fire ICON app-fire)
 target_link_libraries(Fire LibGUI LibCore LibGfx)

Demos/HelloWorld/CMakeLists.txt

@@ -2,5 +2,5 @@ set(SOURCES
     main.cpp
 )
 
-serenity_bin(HelloWorld)
+serenity_app(HelloWorld ICON app-hello-world)
 target_link_libraries(HelloWorld LibGUI)

Demos/LibGfxDemo/CMakeLists.txt

@@ -2,5 +2,5 @@ set(SOURCES
     main.cpp
 )
 
-serenity_bin(LibGfxDemo)
+serenity_app(LibGfxDemo ICON app-libgfx-demo)
 target_link_libraries(LibGfxDemo LibGUI LibIPC LibGfx LibCore)

Demos/Mouse/CMakeLists.txt

@@ -2,5 +2,5 @@ set(SOURCES
     main.cpp
 )
 
-serenity_bin(Mouse)
+serenity_app(Mouse ICON app-mouse)
 target_link_libraries(Mouse LibGUI LibGfx)

Demos/Screensaver/CMakeLists.txt

@@ -2,5 +2,5 @@ set(SOURCES
     Screensaver.cpp
 )
 
-serenity_bin(Screensaver)
+serenity_app(Screensaver ICON app-screensaver)
 target_link_libraries(Screensaver LibGUI LibCore LibGfx)

Demos/WidgetGallery/CMakeLists.txt

@@ -2,5 +2,5 @@ set(SOURCES
     main.cpp
 )
 
-serenity_bin(WidgetGallery)
+serenity_app(WidgetGallery ICON app-widget-gallery)
 target_link_libraries(WidgetGallery LibGUI)