Everywhere: Add component declarations

This adds component declarations so that users can select to not build
certain parts of the OS.

Userland/Demos/CatDog/CMakeLists.txt

@@ -1,3 +1,9 @@
+serenity_component(
+    CatDog
+    RECOMMENDED
+    TARGETS CatDog
+)
+
 set(SOURCES
     CatDog.cpp
     SpeechBubble.cpp

Userland/Demos/Cube/CMakeLists.txt

@@ -1,3 +1,8 @@
+serenity_component(
+    Cube
+    TARGETS Cube
+)
+
 set(SOURCES
     Cube.cpp
 )

Userland/Demos/Eyes/CMakeLists.txt

@@ -1,3 +1,8 @@
+serenity_component(
+    Eyes
+    TARGETS Eyes
+)
+
 set(SOURCES
     main.cpp
     EyesWidget.cpp

Userland/Demos/Fire/CMakeLists.txt

@@ -1,3 +1,8 @@
+serenity_component(
+    Fire
+    TARGETS Fire
+)
+
 set(SOURCES
     Fire.cpp
 )

Userland/Demos/LibGfxDemo/CMakeLists.txt

@@ -1,3 +1,8 @@
+serenity_component(
+    LibGfxDemo
+    TARGETS LibGfxDemo
+)
+
 set(SOURCES
     main.cpp
 )

Userland/Demos/LibGfxScaleDemo/CMakeLists.txt

@@ -1,3 +1,8 @@
+serenity_component(
+    LibGfxScaleDemo
+    TARGETS LibGfxScaleDemo
+)
+
 set(SOURCES
     main.cpp
 )

Userland/Demos/Mandelbrot/CMakeLists.txt

@@ -1,3 +1,8 @@
+serenity_component(
+    Mandelbrot
+    TARGETS Mandelbrot
+)
+
 set(SOURCES
     Mandelbrot.cpp
 )

Userland/Demos/Mouse/CMakeLists.txt

@@ -1,3 +1,8 @@
+serenity_component(
+    Mouse
+    TARGETS Mouse
+)
+
 set(SOURCES
     main.cpp
 )

Userland/Demos/Screensaver/CMakeLists.txt

@@ -1,3 +1,8 @@
+serenity_component(
+    Screensaver
+    TARGETS Screensaver
+)
+
 set(SOURCES
     Screensaver.cpp
 )

Userland/Demos/Starfield/CMakeLists.txt

@@ -1,3 +1,8 @@
+serenity_component(
+    Starfield
+    TARGETS Starfield
+)
+
 set(SOURCES
     Starfield.cpp
 )

Userland/Demos/WidgetGallery/CMakeLists.txt

@@ -1,3 +1,8 @@
+serenity_component(
+    WidgetGallery
+    TARGETS WidgetGallery
+)
+
 compile_gml(./GalleryGML/Window.gml WindowGML.h window_gml)
 compile_gml(./GalleryGML/BasicsTab.gml BasicsTabGML.h basics_tab_gml)
 compile_gml(./GalleryGML/SlidersTab.gml SlidersTabGML.h sliders_tab_gml)