feat!: add tombstone notice to readme

BREAKING CHANGES: Tombstones this repository. Active development has moved to the Slurm charm monorepo: https://github.com/charmed-hpc/slurm-charms/tree/main/charms/slurmctld

README.md

@@ -1,44 +1,5 @@
-<div align="center">
+> The slurmctld charm has been moved to https://github.com/charmed-hpc/slurm-charms/tree/main/charms/slurmctld.
+> This is a public archive of the original repository.
 
-# slurmctld operator
-
-A [Juju](https://juju.is) operator for slurmctld - the central management daemon of [SLURM](https://slurm.schedmd.com/overview.html).
-
-[![Charmhub Badge](https://charmhub.io/slurmctld/badge.svg)](https://charmhub.io/slurmctld)
-[![CI](https://github.com/omnivector-solutions/slurmctld-operator/actions/workflows/ci.yaml/badge.svg)](https://github.com/omnivector-solutions/slurmctld-operator/actions/workflows/ci.yaml/badge.svg)
-[![Release](https://github.com/omnivector-solutions/slurmctld-operator/actions/workflows/release.yaml/badge.svg)](https://github.com/omnivector-solutions/slurmctld-operator/actions/workflows/release.yaml/badge.svg)
-[![Matrix](https://img.shields.io/matrix/ubuntu-hpc%3Amatrix.org?logo=matrix&label=ubuntu-hpc)](https://matrix.to/#/#ubuntu-hpc:matrix.org)
-
-</div>
-
-## Features
-
-The slurmctld operator provides and manages the slurmctld daemon. This operator provides the central management services required for slurmd, slurmdbd, and slurmrestd to function in Charmed SLURM deployments.
-
-## Usage
-
-This operator should be used with Juju 3.x or greater.
-
-#### Deploy a minimal Charmed SLURM cluster
-
-```shell
-$ juju deploy slurmctld --channel edge
-$ juju deploy slurmd --channel edge
-$ juju integrate slurmctld:slurmd slurmd:slurmctld
-```
-
-## Project & Community
-
-The slurmctld operator is a project of the [Ubuntu HPC](https://discourse.ubuntu.com/t/high-performance-computing-team/35988) 
-community. It is an open source project that is welcome to community involvement, contributions, suggestions, fixes, and 
-constructive feedback. Interested in being involved with the development of the slurmctld operator? Check out these links below:
-
-* [Join our online chat](https://matrix.to/#/#ubuntu-hpc:matrix.org)
-* [Contributing guidelines](./CONTRIBUTING.md)
-* [Code of conduct](https://ubuntu.com/community/ethos/code-of-conduct)
-* [File a bug report](https://github.com/omnivector-solutions/slurmctld-operator/issues)
-* [Juju SDK docs](https://juju.is/docs/sdk)
-
-## License
-
-The slurmctld operator is free software, distributed under the Apache Software License, version 2.0. See the [LICENSE](./LICENSE) file for more information.
+Juju charm for slurmctld, the central management daemon of Slurm 🪄
+