Notifications support?

Hey there, we're looking to use this package to generate notification icons for Android. We've noticed that there seems to be (partial) support for notifications already, however they don't seem to be generated as of now. Is there something we're missing? We've tried creating images in the following paths, none of which do anything:

- `android/notification`
- `android/notification-icon`
- `notification`
- `notification-icon`

We were lead to believe support had been added by looking at [src/project.ts#L72](https://github.com/ionic-team/capacitor-assets/blob/e8c04548432bfb34dc3ba266e593b4cfdca827d1/src/project.ts#L72) and [src/definitions.ts#L36](https://github.com/ionic-team/capacitor-assets/blob/e8c04548432bfb34dc3ba266e593b4cfdca827d1/src/definitions.ts#L36). Is this a currently planned feature but not actually implemented? Any insights?