docs(aws-codedeploy): add reference to new ECS CodeDeploy construct (#23478)

Add reference to new ECS CodeDeploy construct Construct Hub


----

### All Submissions:

* [x] Have you followed the guidelines in our [Contributing guide?](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md)

### Adding new Construct Runtime Dependencies:

* [ ] This PR adds new construct runtime dependencies following the process described [here](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md/#adding-construct-runtime-dependencies)

### New Features

* [ ] Have you added the new feature to an [integration test](https://github.com/aws/aws-cdk/blob/main/INTEGRATION_TESTS.md)?
	* [ ] Did you use `yarn integ` to deploy the infrastructure and generate the snapshot (i.e. `yarn integ` without `--dry-run`)?

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: cplee

packages/@aws-cdk/aws-codedeploy/README.md

@@ -26,6 +26,7 @@
   - [ECS Applications](#ecs-applications)
   - [ECS Deployment Groups](#ecs-deployment-groups)
   - [ECS Deployment Configurations](#ecs-deployment-configurations)
+  - [ECS Deployments](#ecs-deployments)
 
 ## Introduction
 
@@ -663,3 +664,55 @@ const deploymentConfig = codedeploy.EcsDeploymentConfig.fromEcsDeploymentConfigN
   'MyExistingDeploymentConfiguration',
 );
 ```
+
+## ECS Deployments
+
+[![cdk-constructs: Experimental](https://img.shields.io/badge/cdk--constructs-experimental-important.svg)](https://constructs.dev/packages/@cdklabs/cdk-ecs-codedeploy)
+
+An experimental construct is available on the Construct Hub called [@cdklabs/cdk-ecs-codedeploy](https://constructs.dev/packages/@cdklabs/cdk-ecs-codedeploy) that manages ECS CodeDeploy deployments.
+
+```ts
+declare const deploymentGroup: codeDeploy.IEcsDeploymentGroup;
+declare const taskDefinition: ecs.ITaskDefinition;
+
+new EcsDeployment({
+  deploymentGroup,
+  targetService: {
+    taskDefinition,
+    containerName: 'mycontainer',
+    containerPort: 80,
+  },
+});
+```
+
+The deployment will use the AutoRollbackConfig for the EcsDeploymentGroup unless it is overridden in the deployment:
+
+```ts
+new EcsDeployment({
+  deploymentGroup,
+  targetService: {
+    taskDefinition,
+    containerName: 'mycontainer',
+    containerPort: 80,
+  },
+  autoRollback: {
+    failedDeployment: true,
+    deploymentInAlarm: true,
+    stoppedDeployment: false,
+  },
+});
+```
+
+By default, the CodeDeploy Deployment will timeout after 30 minutes. The timeout value can be overridden:
+
+```ts
+new EcsDeployment({
+  deploymentGroup,
+  targetService: {
+    taskDefinition,
+    containerName: 'mycontainer',
+    containerPort: 80,
+  },
+  timeout: Duration.minutes(60),
+});
+```