[aws-cdk-lib/pipelines] Support file path filters in trigger

### Describe the feature

The L2 construct `aws-cdk-lib/aws-codepipeline` support adding trigger and support file paths filter, but the L3 construct `aws-cdk-lib/pipelines` does not support it.

I wonder if we have a plan to add this support, and also want to know if there is a walkaround now to add path filter in L3 without changing it back to L2.

### Use Case

I need to use file path filter for my monorepo/microfrontend project, so pipeline will be deployed only when a change happen in a particular folder.

### Proposed Solution

Add a file path filter option in pipeline props.

### Other Information

_No response_

### Acknowledgements

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

### AWS CDK Library version (aws-cdk-lib)

2.213.0

### AWS CDK CLI version

2.1027.0

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

macos

Start at the TypeScript entry points for aws-cdk-lib/pipelines and compare their trigger handling with the file-path filter support in aws-cdk-lib/aws-codepipeline. Trace how pipeline props reach the generated trigger; done means L3 pipeline props accept file path filters and deployments run only for changes in the selected paths.

Written by the indexing model from the issue text.