update readme (#82)

Author: davidzhao

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+  <img style="width:100%;" alt="The LiveKit icon, the name of the repository and some sample code in the background." src="https://raw.githubusercontent.com/livekit/client-sdk-unity/main/.github/banner_light.png">
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 # LiveKit Unity SDK
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 >
 > We welcome and appreciate any feedback or contributions. You can create issues here or chat live with us in the #rust-developer-preview channel within the [LiveKit Community Slack](https://livekit.io/join-slack).
 
-<!--BEGIN_DESCRIPTION-->Use this SDK to add real-time video, audio and data features to your Unity app. By connecting to a self- or cloud-hosted <a href="https://livekit.io/">LiveKit</a> server, you can quickly build applications like interactive live streaming or video calls with just a few lines of code.<!--END_DESCRIPTION-->
+<!--BEGIN_DESCRIPTION-->
+Use this SDK to add realtime video, audio and data features to your Unity app. By connecting to <a href="https://livekit.io/">LiveKit</a> Cloud or a self-hosted server, you can quickly build applications such as multi-modal AI, live streaming, or video calls with just a few lines of code.
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 ## Platform Support
 
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+<br/><table>
+<thead><tr><th colspan="2">LiveKit Ecosystem</th></tr></thead>
+<tbody>
+<tr><td>LiveKit SDKs</td><td><a href="https://github.com/livekit/client-sdk-js">Browser</a> · <a href="https://github.com/livekit/client-sdk-swift">iOS/macOS/visionOS</a> · <a href="https://github.com/livekit/client-sdk-android">Android</a> · <a href="https://github.com/livekit/client-sdk-flutter">Flutter</a> · <a href="https://github.com/livekit/client-sdk-react-native">React Native</a> · <a href="https://github.com/livekit/rust-sdks">Rust</a> · <a href="https://github.com/livekit/node-sdks">Node.js</a> · <a href="https://github.com/livekit/python-sdks">Python</a> · <b>Unity</b> · <a href="https://github.com/livekit/client-sdk-unity-web">Unity (WebGL)</a></td></tr><tr></tr>
+<tr><td>Server APIs</td><td><a href="https://github.com/livekit/node-sdks">Node.js</a> · <a href="https://github.com/livekit/server-sdk-go">Golang</a> · <a href="https://github.com/livekit/server-sdk-ruby">Ruby</a> · <a href="https://github.com/livekit/server-sdk-kotlin">Java/Kotlin</a> · <a href="https://github.com/livekit/python-sdks">Python</a> · <a href="https://github.com/livekit/rust-sdks">Rust</a> · <a href="https://github.com/agence104/livekit-server-sdk-php">PHP (community)</a> · <a href="https://github.com/pabloFuente/livekit-server-sdk-dotnet">.NET (community)</a></td></tr><tr></tr>
+<tr><td>UI Components</td><td><a href="https://github.com/livekit/components-js">React</a> · <a href="https://github.com/livekit/components-android">Android Compose</a> · <a href="https://github.com/livekit/components-swift">SwiftUI</a></td></tr><tr></tr>
+<tr><td>Agents Frameworks</td><td><a href="https://github.com/livekit/agents">Python</a> · <a href="https://github.com/livekit/agents-js">Node.js</a> · <a href="https://github.com/livekit/agent-playground">Playground</a></td></tr><tr></tr>
+<tr><td>Services</td><td><a href="https://github.com/livekit/livekit">LiveKit server</a> · <a href="https://github.com/livekit/egress">Egress</a> · <a href="https://github.com/livekit/ingress">Ingress</a> · <a href="https://github.com/livekit/sip">SIP</a></td></tr><tr></tr>
+<tr><td>Resources</td><td><a href="https://docs.livekit.io">Docs</a> · <a href="https://github.com/livekit-examples">Example apps</a> · <a href="https://livekit.io/cloud">Cloud</a> · <a href="https://docs.livekit.io/home/self-hosting/deployment">Self-hosting</a> · <a href="https://github.com/livekit/livekit-cli">CLI</a></td></tr>
+</tbody>
+</table>
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