Replace click.MultiCommand with click.Group (#2096)

click.MultiCommand is deprecated and will be removed in click 9.
This change migrates to click.Group which is the recommended replacement.

- Changed ElementaryCLI base class from click.MultiCommand to click.Group
- Replaced @click.command with @click.group decorator
- Removed _CMD_MAP dictionary and list_commands() method
- Added commands using cli.add_command() instead
- Updated get_command() to call super().get_command()

Fixes ELE-5220

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Co-authored-by: Itamar Hartstein <haritamar@gmail.com>

Author: devin-ai-integration[bot]

elementary/cli/cli.py

@@ -36,20 +36,10 @@ def get_quiet_logs(ctx):
         return False
 
 
-class ElementaryCLI(click.MultiCommand):  # type: ignore[misc, valid-type]
-    _CMD_MAP = {
-        "monitor": monitor,
-        "report": report,
-        "send-report": send_report,
-        "run-operation": run_operation,
-    }
-
-    def list_commands(self, ctx):
-        return self._CMD_MAP.keys()
-
+class ElementaryCLI(click.Group):
     def get_command(self, ctx, name):
         ctx.auto_envvar_prefix = "EDR"
-        return self._CMD_MAP.get(name)
+        return super().get_command(ctx, name)
 
     def format_help(self, ctx, formatter):
         try:
@@ -75,7 +65,7 @@ def invoke(self, ctx: click.Context) -> Any:
         return super().invoke(ctx)
 
 
-@click.command(
+@click.group(
     cls=ElementaryCLI,
     help="Open source data reliability solution (https://docs.elementary-data.com/)",
 )
@@ -87,5 +77,11 @@ def cli():
     pass
 
 
+cli.add_command(monitor)
+cli.add_command(report)
+cli.add_command(send_report, name="send-report")
+cli.add_command(run_operation, name="run-operation")
+
+
 if __name__ == "__main__":
     cli()