Meta: Tweak QtCreator .files sync script to include .idl files

Meta/refresh-serenity-qtcreator.sh

@@ -5,4 +5,4 @@ then echo "Serenity root not set. Please set environment variable first. E.g. ex
 fi
 
 cd "$SERENITY_ROOT" || exit 1
-find . -name '*.ipc' -or -name '*.cpp' -or -name '*.c' -or -name '*.h' -or -name '*.S' -or -name '*.css' | grep -Fv Patches/ | grep -Fv Root/ | grep -Fv Ports/ | grep -Fv Toolchain/ | grep -Fv Base/ > serenity.files
+find . -name '*.ipc' -or -name '*.cpp' -or -name '*.idl' -or -name '*.c' -or -name '*.h' -or -name '*.S' -or -name '*.css' | grep -Fv Patches/ | grep -Fv Root/ | grep -Fv Ports/ | grep -Fv Toolchain/ | grep -Fv Base/ > serenity.files