(Optionally enable) output manifests to filesystem

### Expected behavior
During the running of `skaffold debug` from the IDE, it would be very helpful when it's possible to write the rendered manifests from Helm to the filesystem, so that they can be inspected when the deployment is failing or otherwise not behaving as expected. It doesn't have to be enabled by default, as long as it's available when required.

### Actual behavior
When the rendering fails, you may get an error of the location where it failed, but there's no way to find that line number unless you manage to replicate the `helm template` command with the relevant flags.

### Information

- Skaffold version: v2.11.0
- Operating system: Windows 10
- Installed via: [IntelliJ plugin](https://plugins.jetbrains.com/plugin/8079-gemini-code-assist-cloud-code)