CMake+Userland: Use CMakeLists from Userland to build Lagom Libraries

Also do this for Shell.

This greatly simplifies the CMakeLists in Lagom, replacing many glob
patterns with a big list of libraries. There are still a few special
libraries that need some help to conform to the pattern, like LibELF and
LibWebView.

It also lets us remove essentially all of the Serenity or Lagom binary
directory detection logic from code generators, as now both projects
directories enter the generator logic from the same place.

Userland/Shell/CMakeLists.txt

@@ -5,29 +5,35 @@ serenity_component(
 )
 
 set(SOURCES
-        AST.cpp
-        Builtin.cpp
-        Formatter.cpp
-        ImmediateFunctions.cpp
-        Job.cpp
-        NodeVisitor.cpp
-        Parser.cpp
-        Shell.cpp
-        SyntaxHighlighter.cpp
-        )
+    AST.cpp
+    Builtin.cpp
+    Formatter.cpp
+    ImmediateFunctions.cpp
+    Job.cpp
+    NodeVisitor.cpp
+    Parser.cpp
+    Shell.cpp
+)
 
 serenity_lib(LibShell shell)
-target_link_libraries(LibShell LibCore LibLine LibSyntax LibRegex LibCodeComprehension)
+target_link_libraries(LibShell LibCore LibLine LibSyntax LibRegex)
 
-set(SOURCES
-        main.cpp
-        )
+if (SERENITYOS)
+    target_sources(LibShell PRIVATE SyntaxHighlighter.cpp)
+    target_link_libraries(LibShell LibCodeComprehension)
+endif()
 
-serenity_bin(Shell)
-target_link_libraries(Shell LibShell LibMain)
+if (ENABLE_FUZZERS)
+    add_custom_target(Shell) # Stub target to placate serenity_component
+else()
+    set(SOURCES main.cpp)
 
-install(DIRECTORY Tests/ DESTINATION usr/Tests/Shell
-        PATTERN "Tests/*"
-        PERMISSIONS OWNER_EXECUTE OWNER_WRITE OWNER_READ
-        GROUP_EXECUTE GROUP_READ
-        WORLD_EXECUTE WORLD_READ)
+    serenity_bin(Shell)
+    target_link_libraries(Shell LibShell LibMain)
+
+    install(DIRECTORY Tests/ DESTINATION usr/Tests/Shell
+            PATTERN "Tests/*"
+            PERMISSIONS OWNER_EXECUTE OWNER_WRITE OWNER_READ
+            GROUP_EXECUTE GROUP_READ
+            WORLD_EXECUTE WORLD_READ)
+endif()