Add documentation for Typecast TTS integration

docs.json

@@ -194,6 +194,7 @@
                   "server/services/tts/rime",
                   "server/services/tts/sarvam",
                   "server/services/tts/speechmatics",
+                  "server/services/tts/typecast",
                   "server/services/tts/xtts"
                 ]
               },

server/services/supported-services.mdx

@@ -104,6 +104,7 @@ Text-to-Speech services receive text input and output audio streams or chunks.
 | [Rime](/server/services/tts/rime)             | `pip install "pipecat-ai[rime]"`       |
 | [Sarvam](/server/services/tts/sarvam)         | No dependencies required               |
 | [Speechmatics](/server/services/tts/speechmatics) | `pip install "pipecat-ai[speechmatics]"` |
+| [Typecast](/server/services/tts/typecast)     | `pip install "pipecat-ai[typecast]"`   |
 | [XTTS](/server/services/tts/xtts)             | `pip install "pipecat-ai[xtts]"`       |
 
 ## Speech-to-Speech

server/services/tts/typecast.mdx

@@ -0,0 +1,54 @@
+---
+title: "Typecast"
+description: "Text-to-speech service using the Typecast's TTS API"
+---
+
+## Overview
+
+The Typecast TTS API provides high-quality and natural text-to-speech with emotions.
+
+<CardGroup cols={3}>
+  <Card
+    title="API Reference"
+    icon="code"
+    href="https://reference-server.pipecat.ai/en/latest/api/pipecat.services.typecast.tts.html"
+  >
+	Pipecat's API methods for Typecast TTS integration
+  </Card>
+  <Card
+    title="Typecast Documentation"
+    icon="book"
+    href="https://typecast.ai/docs"
+  >
+    Official Typecast API documentation
+  </Card>
+  <Card
+    title="Example Implementation"
+    icon="play"
+    href="https://github.com/pipecat-ai/pipecat/blob/main/examples/foundational/07z-interruptible-typecast-http.py"
+  >
+    Complete example with Typecast TTS
+  </Card>
+</CardGroup>
+
+## Installation
+
+To use Typecast services, install the required dependencies:
+
+```bash
+pip install "pipecat-ai[typecast]"
+```
+
+## Prerequisites
+
+### Typecast Account Setup
+
+Before using Typecast TTS services, you need:
+
+1. **Typecast Account**: Sign up at [Typecast](https://typecast.ai)
+2. **API Key**: Generate an API key from your account dashboard
+3. **Voice Selection**: Choose voice IDs from the [voice library](https://typecast.ai/developers)
+
+### Required Environment Variables
+
+- `TYPECAST_API_KEY`: Your ElevenLabs API key for authentication