Run oxipng on the resources/ images

https://bugs.webkit.org/show_bug.cgi?id=259692

Reviewed by Alex Christensen.

`oxipng -omax -s --scale16 -Z` manages to reduce these images by 1.8 MB.

* resources/js-wrapper.png:
* resources/webkit2-process-architecture.png:
* resources/xcode-add-file.png:
* resources/xcode-build-settings-for-run.png:
* resources/xcode-export-header.png:
* resources/xcode-scheme-dumprendertree.png:
* resources/xcode-scheme-layout-test.png:
* resources/xcode-workspace-build-location.png:
* resources/xcode-workspace-settings.png:

Canonical link: https://commits.webkit.org/270537@main

Author: gsnedders