[AWS::ElastiCache::CacheCluster] ElastiCache CacheCluster Resource in CloudFormation does not support Outposts.

### Name of the resource

AWS::ElastiCache::CacheCluster

### Resource name

_No response_

### Description

From the [Elasticache Documentation](https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/ElastiCache-Outposts.html) for launching on outpost, it can be seen that steps/guidance is provided for both console and AWS CLI, but nothing for CFN :-

Via Console - The VPC ID should match that of outpost VPC
Via AWS CLI - Parameter --outpost-mode needs to be mentioned along with value as single-outpost

However `AWS::ElastiCache::CacheCluster` does not support property to launch using Outpost.

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-elasticache-cachecluster.html

### Other Details

_No response_

Start with the linked ElastiCache Outposts documentation and the AWS::ElastiCache::CacheCluster CloudFormation reference, then compare the documented AWS CLI --outpost-mode behavior with the resource properties. Done means CloudFormation can configure CacheCluster deployment on an Outpost and the supported property and usage are documented.

Written by the indexing model from the issue text.