CMake: Rename SERENITY_* helper variables to LADYBIRD_*

Author: https://github.com/ayeteadoe
Commit: f737ec2570
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5249
Reviewed-by: https://github.com/gmta ✅

UI/Android/BuildLagomTools.sh

@@ -34,7 +34,7 @@ cmake -S "${LADYBIRD_SOURCE_DIR}/Meta/Lagom" -B "$BUILD_DIR/lagom-tools" \
     -DCMAKE_INSTALL_PREFIX="$BUILD_DIR/lagom-tools-install"  \
     -DCMAKE_C_COMPILER="$CC" \
     -DCMAKE_CXX_COMPILER="$CXX" \
-    -DSERENITY_CACHE_DIR="$CACHE_DIR" \
+    -DLADYBIRD_CACHE_DIR="$CACHE_DIR" \
     -DLAGOM_TOOLS_ONLY=ON \
     -DINSTALL_LAGOM_TOOLS=ON \
     -DCMAKE_TOOLCHAIN_FILE="$LADYBIRD_SOURCE_DIR/Build/vcpkg/scripts/buildsystems/vcpkg.cmake" \

UI/Android/build.gradle.kts

@@ -6,7 +6,7 @@ plugins {
 }
 
 var buildDir = layout.buildDirectory.get()
-var cacheDir = System.getenv("SERENITY_CACHE_DIR") ?: "$buildDir/caches"
+var cacheDir = System.getenv("LADYBIRD_CACHE_DIR") ?: "$buildDir/caches"
 var sourceDir = layout.projectDirectory.dir("../../").toString()
 
 task<Exec>("buildLagomTools") {
@@ -39,7 +39,7 @@ android {
                 arguments += listOf(
                     "-DLagomTools_DIR=$buildDir/lagom-tools-install/share/LagomTools",
                     "-DANDROID_STL=c++_shared",
-                    "-DSERENITY_CACHE_DIR=$cacheDir",
+                    "-DLADYBIRD_CACHE_DIR=$cacheDir",
                     "-DVCPKG_ROOT=$sourceDir/Build/vcpkg",
                     "-DVCPKG_TARGET_ANDROID=ON"
                 )