[skia] Add Region Op fuzzer (#5527)

diff --git a/projects/skia/build.sh b/projects/skia/build.sh
index 5540e81..0f6d73f 100644
--- a/projects/skia/build.sh
+++ b/projects/skia/build.sh
@@ -110,6 +110,7 @@
   api_pathop \
   api_polyutils \
   api_raster_n32_canvas \
+  api_regionop \
   api_skparagraph \
   api_svg_canvas \
   image_decode \
@@ -252,3 +253,5 @@
 mv ../skia_data/skp_seed_corpus.zip $OUT/skp_seed_corpus.zip
 
 mv out/Fuzz/api_skparagraph $OUT/api_skparagraph
+
+mv out/Fuzz/api_regionop $OUT/api_regionop