LibWeb: Implement <feComposite> SVG filter

Author: https://github.com/tcl3
Commit: a00e7cb20b
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5744
Reviewed-by: https://github.com/gmta ✅
Reviewed-by: https://github.com/konradekk

Libraries/LibWeb/CMakeLists.txt

@@ -903,6 +903,7 @@ set(SOURCES
     SVG/SVGElement.cpp
     SVG/SVGEllipseElement.cpp
     SVG/SVGFEBlendElement.cpp
+    SVG/SVGFECompositeElement.cpp
     SVG/SVGFEFloodElement.cpp
     SVG/SVGFEGaussianBlurElement.cpp
     SVG/SVGFEImageElement.cpp