CMake: Rename serenity_* helper functions/macros to ladybird_*

Author: https://github.com/ayeteadoe
Commit: 25f5936dee
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5249
Reviewed-by: https://github.com/gmta ✅

Libraries/LibCompress/CMakeLists.txt

@@ -6,7 +6,7 @@ set(SOURCES
     Zlib.cpp
 )
 
-serenity_lib(LibCompress compress)
+ladybird_lib(LibCompress compress)
 target_link_libraries(LibCompress PRIVATE LibCore LibCrypto)
 
 find_package(ZLIB REQUIRED)