Add plugin subcommand

src/_nebari/subcommands/plugin.py

@@ -0,0 +1,42 @@
+import rich
+import typer
+from rich.table import Table
+
+from importlib.metadata import version
+
+from _nebari.version import __version__
+from nebari.hookspecs import hookimpl
+
+@hookimpl
+def nebari_subcommand(cli: typer.Typer):
+    plugin_cmd = typer.Typer(
+        add_completion=False,
+        no_args_is_help=True,
+        rich_markup_mode="rich",
+        context_settings={"help_option_names": ["-h", "--help"]},
+    )
+
+    cli.add_typer(
+        plugin_cmd,
+        name="plugin",
+        help="Interact with nebari plugins",
+        rich_help_panel="Additional Commands"
+    )
+
+    @plugin_cmd.command()
+    def list(ctx: typer.Context):
+        """
+        List installed plugins
+        """
+        from nebari.plugins import nebari_plugin_manager
+
+        external_plugins = nebari_plugin_manager.get_external_plugins()
+
+        table = Table(title="Plugins")
+        table.add_column("name", justify="left", no_wrap=True)
+        table.add_column("version", justify="left", no_wrap=True)
+
+        for plugin in external_plugins:
+            table.add_row(plugin, version(plugin))
+
+        rich.print(table)

src/nebari/plugins.py

@@ -19,6 +19,7 @@
     "_nebari.subcommands.deploy",
     "_nebari.subcommands.destroy",
     "_nebari.subcommands.keycloak",
+    "_nebari.subcommands.plugin",
     "_nebari.subcommands.render",
     "_nebari.subcommands.support",
     "_nebari.subcommands.upgrade",