Add onetrust source docs (#4331)

* Add onetrust source docs

* fix typo

Author: tcgilbert

src/connections/sources/catalog/cloud-apps/onetrust/index.md

@@ -0,0 +1,49 @@
+---
+title: OneTrust Source
+id: QhEUZnE5uF
+beta: true
+hidden: true
+---
+
+OneTrust makes it easy for you to capture, centralize, govern, and sync consented first party data while keeping trust & transparency at the forefront of all consumer interactions. The OneTrust Integration provides data to Segment’s CDP and allows you to view & activate consented data in the appropriate way. 
+
+This is an Event Cloud Source which can not only export data into your Segment warehouse, but they can also federate the exported data into your other enabled Segment Destinations. 
+
+This source is maintained by OneTrust. For any issues with the source, [contact their support team]([email protected]).
+
+## Getting Started 
+
+1. From your workspace's [Sources catalog page](https://app.segment.com/goto-my-workspace/sources/catalog) click **Add Source**.
+
+2. Search for “OneTrust” in the Sources Catalog, select MoEOneTrustngage, and click **Add Source**.
+
+3. On the next screen, give the Source **a nickname** configure any other settings.
+    - The nickname is used as a label in the Segment app, and Segment creates a related schema name in your warehouse. The nickname can be anything, but Segment recommends using something that reflects the source itself and distinguishes amongst your environments (like `OneTrust_Prod`, `OneTrust_Staging`, or `OneTrust_Dev`).
+
+4. Copy the **Write key** from the Segment UI and log in to your OneTrust account - navigate to Settings > Integrations > Segment Integration and paste the key after encoding it.
+
+## Stream
+
+OneTrust uses Segment's stream Source component to send Segment event data. It uses a server-side method(s) to send data to Segment. These events are then available in any destination that accepts server-side events and are available in a schema in your data warehouse, so you can query using SQL.
+
+OneTrust allows you to configure the userId from various sources from within the OneTrust platform.
+
+## Events
+
+Use the OneTrust integration to define the events to be sent to Segment These events can be tailored to align with your existing process or particular use case.
+
+## Event Properties
+
+The OneTrust integration allows you to define event properties within the following constraints:
+
+- Use `Track` events to define the `properties` object
+- Use `Identify` events to define the `traits` object
+
+
+## Adding Destinations
+
+Now that your Source is set up, you can connect it with Destinations.
+
+Log into your downstream tools and verify that events and properties appear the way you expect. If events and properties don’t appear as you expect them to, check the [Event Delivery](https://segment.com/docs/connections/event-delivery/) tool, and refer to the Destination docs for each tool for troubleshooting.
+
+If there are any issues with how the events are arriving to Segment, [contact the OneTrust support team]([email protected]).