<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
- **New Features**
- Introduced username and password parameters for NATS authentication,
enhancing security options.
- Added a new configuration for specifying the Kubernetes cluster domain
for routing.
- Implemented a new Role in Kubernetes RBAC for managing secrets related
to the NATS dashboard.
- **Bug Fixes**
- Updated versioning information for the NATS application to reflect the
latest changes.
- **Documentation**
- Enhanced the README with details on new authentication parameters and
configuration options.
- Updated the JSON schema to include new properties for user
configuration.
- **Chores**
- Incremented the NATS application version from 0.2.0 to 0.3.0.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
This change is aimed at improving the development experience.
- The option `make delete` has been added.
- Added check for `NAME` and `NAMESPACE` variables
- Now, any package (not just system ones) can include options such as
make show, make diff, make apply.
- Applications from packages/extra require explicit specification of the
`NAMESPACE`.
- Applications from packages/apps require explicit specification of both
`NAME` and `NAMESPACE`.
Signed-off-by: Andrei Kvapil <kvapss@gmail.com>