support CloudFormation template configuration file for deploy-serverless

### Describe the feature

The [template configuration file](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/continuous-delivery-codepipeline-cfn-artifacts.html#w2ab1c21c15c15) is supported by several other tools in the CloudFormation ecosystem, and provides a convenient way to share config between manual deployments and CodePipeline.

### Use Case

When using a CI/CD pipeline, we prefer to use one `package-ci` call with multiple CloudFormation deployments (via CodePipeline's CloudFormation action). However, when experimenting locally, `dotnet lambda deploy-serverless` would be more convenient to use. Being able to share one config file format between the two (copying & tweaking or overriding the dev config file for local experiments) would make this a lot more straightforward.

### Proposed Solution

an option for `dotnet lambda deploy-serverless` accepting a relative path to a CloudFormation template config file, which applies that config but is overridden by the `--template-parameters` and `--tags` arguments

### Other Information

A workaround which only respects Parameters (not Tags) is to use `dotnet lambda package-ci` followed by `aws cloudformation deploy --parameter-overrides file://{config_file_path}`

### Acknowledgements

- [ ] I may be able to implement this feature request
- [ ] This feature might incur a breaking change

### Targeted .NET platform

6.0.202

### CLI extension version

5.1.4

### Environment details (OS name and version, etc.)

Windows 10, git bash

Start at the dotnet lambda deploy-serverless command and compare its configuration flow with the package-ci workaround and aws cloudformation deploy parameter-overrides usage. Verify how a CloudFormation template configuration file should be read, then confirm that --template-parameters and --tags override it; done means local deploy-serverless supports the shared file format without changing those override rules.

Written by the indexing model from the issue text.