This adds `ProgressView` using the `<progress>` tag on the web.
* Add ProgressView implementation
* Fix native demo
* Enable Foundation.Progress in non-WASI environments
* Fix wasm build
* Update progress coc
* Improve snapshot copy error handling
* Use RenderingTests as directory name
* Fix snapshots CI script
* Make test failures fail the CI job
* Snapshot script debugging
* Copy failed snapshots in a different way
* Call `exit 1` when tests fail
* Use correct directory in the upload step
* Update test image
* Update .github/workflows/ci.yml
Co-authored-by: ezraberch <49635435+ezraberch@users.noreply.github.com>
Co-authored-by: Max Desiatov <max@desiatov.com>
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