Add PlusCommand enhanced command system

Introduces the PlusCommand system for simplified command development, including new base classes, argument parsing utilities, and registration logic. Updates the plugin system, component registry, and bot message handling to support PlusCommand components alongside traditional commands. Adds documentation and configuration for command prefixes, and provides a developer guide for the new system.

src/plugin_system/base/base_plugin.py

@@ -1,13 +1,14 @@
 from abc import abstractmethod
-from typing import List, Type, Tuple, Union
+from typing import List, Type, Tuple, Union, TYPE_CHECKING
 from .plugin_base import PluginBase
 
 from src.common.logger import get_logger
-from src.plugin_system.base.component_types import ActionInfo, CommandInfo, EventHandlerInfo, ToolInfo
+from src.plugin_system.base.component_types import ActionInfo, CommandInfo, PlusCommandInfo, EventHandlerInfo, ToolInfo
 from .base_action import BaseAction
 from .base_command import BaseCommand
 from .base_events_handler import BaseEventHandler
 from .base_tool import BaseTool
+from .plus_command import PlusCommand
 
 logger = get_logger("base_plugin")
 
@@ -31,6 +32,7 @@ class BasePlugin(PluginBase):
         Union[
             Tuple[ActionInfo, Type[BaseAction]],
             Tuple[CommandInfo, Type[BaseCommand]],
+            Tuple[PlusCommandInfo, Type[PlusCommand]],
             Tuple[EventHandlerInfo, Type[BaseEventHandler]],
             Tuple[ToolInfo, Type[BaseTool]],
         ]