gitignore pixel cruft

Author: Lucas Adamski

.gitignore

@@ -97,4 +97,8 @@ report
 !/node_modules/@duckduckgo/content-scope-scripts/build/android/
 !/node_modules/@duckduckgo/content-scope-scripts/build/android/pages/
 /node_modules/@duckduckgo/content-scope-scripts/build/android/pages/*
-!/node_modules/@duckduckgo/content-scope-scripts/build/android/pages/duckplayer/
+!/node_modules/@duckduckgo/content-scope-scripts/build/android/pages/duckplayer/
+
+# Pixel processing results
+PixelDefinitions/pixel_processing_results/*
+PixelDefinitions/node_modules/