add: list raycluster function cli

Author: carsonmh

src/codeflare_sdk/cli/commands/list.py

@@ -0,0 +1,31 @@
+import click
+from kubernetes import client, config
+
+from codeflare_sdk.cluster.cluster import (
+    list_clusters_all_namespaces,
+    list_all_clusters,
+    get_current_namespace,
+)
+from codeflare_sdk.cli.cli_utils import load_auth
+
+
+@click.group()
+def cli():
+    """List a specified resource"""
+    pass
+
+
+@cli.command()
+@click.option("--namespace")
+@click.option("--all", is_flag=True)
+@click.pass_context
+def rayclusters(ctx, namespace, all):
+    """List all rayclusters in a specified namespace"""
+    if all and namespace:
+        click.echo("--all and --namespace are mutually exclusive")
+        return
+    namespace = namespace or "default"
+    if not all:
+        list_all_clusters(namespace)
+        return
+    list_clusters_all_namespaces()