added cli method to default methods of openpypemodule

openpype/modules/README.md

@@ -22,7 +22,7 @@ OpenPype modules should contain separated logic of specific kind of implementati
 - `__init__` should not be overridden and `initialize` should not do time consuming part but only prepare base data about module
  - also keep in mind that they may be initialized in headless mode
 - connection with other modules is made with help of interfaces
-- `cli` method - can add cli commands specific for the module
+- `cli` method - add cli commands specific for the module
     - command line arguments are handled using `click` python module
     - `cli` method should expect single argument which is click group on which can be called any group specific methods (e.g. `add_command` to add another click group as children see `ExampleAddon`)
     - it is possible to add trigger cli commands using `./openpype_console module <module_name> <command> *args`

openpype/modules/base.py

@@ -431,6 +431,28 @@ class OpenPypeModule:
         """
         return {}
 
+    def cli(self, module_click_group):
+        """Add commands to click group.
+
+        The best practise is to create click group for whole module which is
+        used to separate commands.
+
+        class MyPlugin(OpenPypeModule):
+            ...
+            def cli(self, module_click_group):
+                module_click_group.add_command(cli_main)
+
+
+        @click.group(<module name>, help="<Any help shown in cmd>")
+        def cli_main():
+            pass
+
+        @cli_main.command()
+        def mycommand():
+            print("my_command")
+        """
+        pass
+
 
 class OpenPypeAddOn(OpenPypeModule):
     # Enable Addon by default