feat(browser): make iframe scalable, improve documentation (#6257)

Author: sheremet-va

README.md

@@ -37,6 +37,7 @@ Next generation testing framework powered by Vite.
 - [Native code coverage](https://vitest.dev/guide/features.html#coverage) via [`v8`](https://v8.dev/blog/javascript-code-coverage) or [`istanbul`](https://istanbul.js.org/).
 - [Tinyspy](https://github.com/tinylibs/tinyspy) built-in for mocking, stubbing, and spies.
 - [JSDOM](https://github.com/jsdom/jsdom) and [happy-dom](https://github.com/capricorn86/happy-dom) for DOM and browser API mocking
+- [Browser Mode](https://vitest.dev/guide/browser/) for running component tests in the browser
 - Components testing ([Vue](./examples/vue), [React](./examples/react), [Svelte](./examples/svelte), [Lit](./examples/lit), [Vitesse](./examples/vitesse), [Marko](https://github.com/marko-js/examples/tree/master/examples/library-ts))
 - Workers multi-threading via [Tinypool](https://github.com/tinylibs/tinypool) (a lightweight fork of [Piscina](https://github.com/piscinajs/piscina))
 - Benchmarking support with [Tinybench](https://github.com/tinylibs/tinybench)

docs/.vitepress/components/FeaturesList.vue

@@ -22,6 +22,7 @@
     <ListItem><a target="_blank" href="https://www.chaijs.com/" rel="noopener noreferrer">Chai</a> built-in for assertions + <a target="_blank" href="https://jestjs.io/docs/expect" rel="noopener noreferrer">Jest expect</a> compatible APIs</ListItem>
     <ListItem><a target="_blank" href="https://github.com/tinylibs/tinyspy" rel="noopener noreferrer">Tinyspy</a> built-in for mocking</ListItem>
     <ListItem><a target="_blank" href="https://github.com/capricorn86/happy-dom" rel="noopener noreferrer">happy-dom</a> or <a target="_blank" href="https://github.com/jsdom/jsdom" rel="noopener noreferrer">jsdom</a> for DOM mocking</ListItem>
+    <ListItem><a href="https://vitest.dev/guide/browser/" rel="noopener noreferrer">Browser Mode</a> for running component tests in the browser</ListItem>
     <ListItem>Code coverage via <a target="_blank" href="https://v8.dev/blog/javascript-code-coverage" rel="noopener noreferrer">v8</a> or <a target="_blank" href="https://istanbul.js.org/" rel="noopener noreferrer">istanbul</a></ListItem>
     <ListItem>Rust-like <a href="/guide/in-source">in-source testing</a></ListItem>
     <ListItem>Type Testing via <a target="_blank" href="https://github.com/mmkal/expect-type" rel="noopener noreferrer">expect-type</a></ListItem>