docs: add page on language bindings (#3819)

Author: arjunattam

docs/README.md

@@ -22,6 +22,7 @@ Playwright is a library to automate [Chromium](https://www.chromium.org/Home), [
     - [Get started](./intro.md)
     - [Core concepts](./core-concepts.md)
     - [Debugging](./debug.md)
+    - [Supported languages](./languages.md)
 1. Guides
     - [Selectors](./selectors.md)
     - [Input](./input.md)

docs/languages.md

@@ -0,0 +1,43 @@
+# Supported languages
+
+The Playwright API is available in multiple languages.
+
+<!-- GEN:toc -->
+- [JavaScript and TypeScript](#javascript-and-typescript)
+- [Python](#python)
+- [C#](#c)
+<!-- GEN:stop -->
+
+## JavaScript and TypeScript
+
+Playwright for JavaScript and TypeScript is generally available.
+
+```
+npm i -D playwright
+```
+
+* [Playwright on NPM](https://www.npmjs.com/package/playwright)
+* [GitHub repo](https://github.com/microsoft/playwright)
+
+## Python
+
+Playwright in Python is available in preview.
+
+```
+pip install playwright
+```
+
+* [Playwright on PyPI](https://pypi.org/project/playwright/)
+* [GitHub repo](https://github.com/microsoft/playwright-python)
+* [Pytest integration](https://github.com/microsoft/playwright-pytest)
+
+## C#
+
+Playwright in C# is available in preview.
+
+```
+dotnet add package PlaywrightSharp
+```
+
+* [Playwright on NuGet](https://www.nuget.org/packages/PlaywrightSharp/)
+* [GitHub repo](https://github.com/hardkoded/playwright-sharp)

docs/why-playwright.md

@@ -35,7 +35,7 @@ Playwright enables fast, reliable and capable automation across all modern brows
 
 * **Modern web features**. Playwright supports web components through [shadow-piercing selectors](selectors.md), [geolocation, permissions](emulation.md), web workers and other modern web APIs. 
 
-* **Capabilities to cover all scenarios**. Support for [file downloads](network.md) and [uploads](input.md), native [input events](input.md), and even [dark mode](emulation.md).
+* **Capabilities to cover all scenarios**. Support for [file downloads](network.md) and [uploads](input.md), out-of-process iframes, native [input events](input.md), and even [dark mode](emulation.md).
 
 ## Integrates with your workflow
 * **One-line installation**. Running `npm i playwright` auto-downloads browser dependencies for your team to be onboarded quickly.
@@ -44,7 +44,7 @@ Playwright enables fast, reliable and capable automation across all modern brows
 
 * **Debugging tools**. Playwright works with the [editor debugger and browser developer tools](debug.md) to pause execution and inspect the web page.
 
-* **Language bindings**. Playwright is also available in [Python](https://github.com/microsoft/playwright-python) and [C#](https://github.com/hardkoded/playwright-sharp).
+* **Language bindings**. Playwright is also available in [Python](https://github.com/microsoft/playwright-python) and [C#](https://github.com/hardkoded/playwright-sharp). Learn about [supported languages](./languages.md).
 
 * **Deploy tests to CI**. First-party [Docker image](docker/README.md) and [GitHub Actions](https://github.com/microsoft/playwright-github-action) to deploy tests to [your preferred CI/CD provider](ci.md).