[connector-request] AWS Cost Explorer

This is a **suggestion** to create a connector for **AWS Cost Explorer** using the UI Connector Builder.
The website for the connector is https://aws.amazon.com/aws-cost-management/aws-cost-explorer.

If you want to try, claim this issue and start working on it following the steps below.

### Steps:
1. Comment in the issue and wait to be assigned to start working on it.
2. Map the API endpoints (get approval to move to 3 step)
3. Describe steps to get credentials.
4. Create the connector using the UI Builder

> [!IMPORTANT]
> Airbyte doesn't have sandbox credentials for this connector. You must have access/credentials to the service provider to create the connector.

> [!CAUTION]
> This is a **suggestion** and there may be cases where creating the connector using the Builder won't be possible. To minimize the risk of investing a lot of time directly in creating the connector, we strongly recommend to follow steps above.