Add AAZ loader to load preview API commands with PSS support

Author: ShantingLiu

src/aks-preview/azext_aks_preview/__init__.py

@@ -35,6 +35,21 @@ def __init__(self, cli_ctx=None):
 
     def load_command_table(self, args):
         super().load_command_table(args)
+
+        # Load AAZ-generated commands from the preview API
+        from azure.cli.core.aaz import load_aaz_command_table
+        try:
+            from . import aaz
+        except ImportError:
+            aaz = None
+        if aaz:
+            load_aaz_command_table(
+                loader=self,
+                aaz_pkg_name=aaz.__name__,
+                args=args
+            )
+
+        # Load custom command implementations (will override AAZ commands)
         from azext_aks_preview.commands import load_command_table
         load_command_table(self, args)
         return self.command_table