AWS CloudFormation Git sync for many yaml files or folder

### Name of the resource

AWS::CloudFormation::Stack

### Resource name

AWS CloudFormation Git sync

### Description

Hi,

Can you add a possibility to use a folder/many files in Git sync stack deployment file.

Currently, we can only use one file:

`template-file-path: ./fargate-srvc/my-stack-template.yaml`

### Other Details

_No response_

Start from the issue's `template-file-path: ./fargate-srvc/my-stack-template.yaml` example and clarify how Git sync should accept a folder or multiple YAML files for `AWS::CloudFormation::Stack`. No source files or tests are mentioned; done should mean a documented, agreed behavior for deploying stacks from multiple files or a folder.

Written by the indexing model from the issue text.