Create lambda with cognito-sync-trigger.

**Which Category is your question related to?**
cognito-sync-trigger

**Amplify CLI Version**
10.0.0

**What AWS Services are you utilizing?**
lambda, cognito, appSync

**Provide additional details e.g. code snippets. _Be sure to remove any sensitive data._**
Can I create a lambda with a cognito-sync-trigger from the cli? When i select the trigger option template, it only allows me to select dynamo and kinesis streams.

https://docs.aws.amazon.com/cognito/latest/developerguide/cognito-events.html

Start by reproducing the trigger-template selection in Amplify CLI 10.0.0 and read the linked Cognito events documentation. Trace how the existing DynamoDB and Kinesis trigger options are exposed; done means a cognito-sync-trigger can be selected from the CLI and the resulting Lambda integration works.

Written by the indexing model from the issue text.