Add playwright browser test (#48)

* Add playwright

* Add test:browser command

* Remove test examples

* Add basic node tests

* Add drag node test

* Merge workflows

* nit

* Localize jest

* Add local config

* Change working dir

* Use consistent fonts

* Fix emoji fonts

* Update github action to save expectation

* update on test failure

* push to head

* Update test expectations [skip ci]

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Co-authored-by: github-actions <github-actions@github.com>

.gitignore

@@ -25,3 +25,11 @@ dist-ssr
 
 # Ignore test data.
 tests-ui/data/*
+
+# Browser tests
+/test-results/
+/playwright-report/
+/blob-report/
+/playwright/.cache/
+
+.env