Rename install_cli to add_options

src/ocrmypdf/__main__.py

@@ -37,7 +37,7 @@ def run(args=None):
     plugin_manager = get_plugin_manager(pre_options.plugins)
 
     parser = get_parser()
-    plugin_manager.hook.install_cli(parser=parser)
+    plugin_manager.hook.add_options(parser=parser)
 
     options = parser.parse_args(args=args)
 

src/ocrmypdf/api.py

@@ -274,7 +274,7 @@ def ocr(  # pylint: disable=unused-argument
 
     parser = get_parser()
     _plugin_manager = get_plugin_manager(plugins)
-    _plugin_manager.hook.install_cli(parser=parser)
+    _plugin_manager.hook.add_options(parser=parser)
 
     options = create_options(
         **{k: v for k, v in locals().items() if not k.startswith('_')}

src/ocrmypdf/pluginspec.py

@@ -26,8 +26,12 @@ hookspec = pluggy.HookspecMarker('ocrmypdf')
 
 
 @hookspec
-def install_cli(parser: ArgumentParser) -> None:
-    """Allows the plugin to add its own command line arguments."""
+def add_options(parser: ArgumentParser) -> None:
+    """Allows the plugin to add its own command line arguments.
+
+    Even if you do not intend to use plugins in a command line context, you
+    should use this function to create your options.
+    """
 
 
 @hookspec