meta(entry-points): add a slurm entry-point.

pyproject.toml

@@ -82,6 +82,7 @@
     sge-io-big      = "bob.pipelines.config.distributed.sge_io_big:dask_client"
     sge-io-big-non-adaptive = "bob.pipelines.config.distributed.sge_io_big_non_adaptive:dask_client"
     sge-gpu         = "bob.pipelines.config.distributed.sge_gpu:dask_client"
+    slurm           = "bob.pipelines.config.distributed.slurm_cpu_default:dask_client"
 
 [tool.distutils.bdist_wheel]
     universal = true