## What this PR does
This PR splits the monolithic `cozystack-resource-definitions` package
into 25 individual resource definition packages (`*-rd`) for better
modularity and independent versioning.
**Changes:**
- Created 25 separate `*-rd` packages (bootbox-rd, bucket-rd,
clickhouse-rd, etcd-rd, ferretdb-rd, foundationdb-rd, http-cache-rd,
info-rd, ingress-rd, kafka-rd, kubernetes-rd, monitoring-rd, mysql-rd,
nats-rd, postgres-rd, rabbitmq-rd, redis-rd, seaweedfs-rd,
tcp-balancer-rd, tenant-rd, virtual-machine-rd, virtualprivatecloud-rd,
vm-disk-rd, vm-instance-rd, vpn-rd)
- Removed `packages/system/cozystack-resource-definitions`
- Updated platform bundles (paas-hosted, paas-full, distro-full) to
reference individual -rd packages
- Updated `hack/update-crd.sh` to use package-specific directories
Each `*-rd` package contains:
- `Chart.yaml` - package metadata
- `values.yaml` - default values
- `Makefile` - build instructions
- `cozyrds/<name>.yaml` - CRD definition
- `templates/cozyrd.yaml` - Helm template
**Benefits:**
- **Modularity**: Each resource definition is now a standalone package
- **Independent versioning**: Resources can be versioned independently
- **Maintainability**: Easier to update individual resources
- **Build efficiency**: Parallel building of resource packages
### Release note
```release-note
[platform] Split cozystack-resource-definitions into 25 separate *-rd packages for better modularity and independent versioning. Each resource definition is now a standalone package.
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
* **Refactor**
* Split the monolithic resource-definitions into many independent resource-definition packages (e.g., bootbox-rd, bucket-rd, clickhouse-rd, etc.) for modular deployment and finer-grained management
* Updated deployment bundles to reference the new per-resource releases with uniform cozy-system namespace and CRD dependency
* **Chores**
* Added packaging/Helm stubs (Chart.yaml, Makefile, values, templates) for each new resource-definition
* **Bug Fixes**
* Made CRD path resolution dynamic (NAME validated before assignment)
<sub>✏️ Tip: You can customize this high-level summary in your review settings.</sub>
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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