[Docs] add docs for youtube channel (#1072)

Co-authored-by: Deven Patel <deven298@yahoo.com>

docs/components/data-sources/youtube-channel.mdx

@@ -0,0 +1,20 @@
+---
+title: '📽️ Youtube Channel'
+---
+
+To add all the videos from a youtube channel to your app, use the data_type as `youtube_channel`.
+
+<Note>
+Make sure you have all the required packages installed before using this data type. You can install them by running the following command in your terminal.
+
+```bash
+pip install -u "embedchain[youtube]"
+```
+</Note>
+
+```python
+from embedchain import Pipeline as App
+
+app = App()
+app.add("@channel_name", data_type="youtube_channel")
+```