Redshift Datashare - No CFN Support -

### Name of the resource

AWS::Redshift::Cluster

### Resource name

_No response_

### Description

Looking for cloudformation support for redshift's data sharing.
Currently the only way to create a datashare and grant access to/from clusters is either through redshift cli or from within the cluster itself running sql.

I feel like this should be supported though redshift CFN. As both the cli and sql route could provide security risks allowing end users to make the adjustments to current datashares. Also a CFN supported resource would allow us to better manage and visualize what datashares are current active and which consumer clusters are attached. Rather than having to navigate through the console.

The way im thinking of it would be like a datashare resource with parameters like
'producer cluster ARN'
'datashare name'
'consumer cluster ID(s and account'
or potentially a resource/parameter that would allow you attach other consumer clusters. kinda like a secret attachment.

### Other Details

_No response_

Start by reviewing the requested AWS::Redshift::Cluster coverage and the described CLI and SQL workflows for creating datashares and granting producer and consumer cluster access. Done would mean a defined CloudFormation approach covering datashare names, producer cluster ARNs, and consumer cluster IDs or accounts, with the resulting resource behavior documented.

Written by the indexing model from the issue text.