docs: add stitches, remix, playwright, update css-in-js, tailwind

radar/2022-03-28/playwright.md

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+---
+title: "Playwright"
+ring: assess
+quadrant: tools
+---
+
+Playwright is a cross browser/platform/language tool to write reliable end-to-end tests. It waits for elements before performing any actions which eliminates the need for timeouts - the primary cause of flaky tests.