Ladybird+Meta: Extract AK into its own library on Lagom

We currently bundle AK with LibCore on Lagom. This means that to use AK,
all libraries must also depend on LibCore. This will create circular
dependencies when we create LibURL, as LibURL will depend on LibUnicode,
which will depend on LibCore, which will depend on LibURL.

Meta/Lagom/Contrib/MacPDF/CMakeLists.txt

@@ -24,7 +24,7 @@ add_executable(MacPDF MACOSX_BUNDLE
 target_compile_options(MacPDF PRIVATE
     -fobjc-arc
 )
-target_link_libraries(MacPDF PRIVATE LibCore LibGfx LibPDF)
+target_link_libraries(MacPDF PRIVATE AK LibCore LibGfx LibPDF)
 target_link_libraries(MacPDF PRIVATE
     "-framework Cocoa"
     "-framework UniformTypeIdentifiers"
@@ -39,7 +39,7 @@ set_target_properties(MacPDF PROPERTIES
 )
 
 # Normally you'd set `RESOURCE "${RESOURCES}"` on the MacPDF target properties
-# and add `"${RESOURCES}" to the sources in add_executable() 
+# and add `"${RESOURCES}" to the sources in add_executable()
 # and CMake would add build steps to compile the xib files to nib files and
 # add them to the bundle.
 # But with CMake's ninja generator that seems to not work, so do it manually.
@@ -51,7 +51,7 @@ foreach(xib ${RESOURCES})
     # FIXME: This is gross! It makes the link at least as slow as compiling all xib files.
     # Better to have a separate command for the compiles and to only do the copying in the postbuild.
     add_custom_command(TARGET MacPDF POST_BUILD
-        COMMAND ${IBTOOL} --errors --warnings --notices --output-format human-readable-text 
+        COMMAND ${IBTOOL} --errors --warnings --notices --output-format human-readable-text
                 --compile "$<TARGET_BUNDLE_DIR:MacPDF>/Contents/Resources/${nib}"
                 "${CMAKE_CURRENT_SOURCE_DIR}/${xib}"
         COMMENT "Compiling ${CMAKE_CURRENT_SOURCE_DIR}/${xib}.xib")