Xiangyang Wu db182ead67 misc: life_mngr: add command module ...

In the command module, the following functions are implemented:
- register_command_handler
Provide one interface to register command handler, other module
can use this interface to register multiple handler for one command.

- find_command
Provide one interface to find a command instance by name;

- dispatch_command_handlers
Provide one interface to dispatch the command and invoke registered
handler.

v1-->v2:
	Add comments in head file.
v2-->v3:
	Update interface name since "dm" prefix is useless.
	Update some log message.
v3-->v4:
	Support guest shutdown.
v4-->v5:
	Refine command name and add parameter check for interface.
v5-->v6:
	Remove allow s5 command.

Tracked-On: #6652

Signed-off-by: Xiangyang Wu <xiangyang.wu@intel.com>
Reviewed-by: fei1.li@intel.com

2021-11-10 18:46:15 +08:00

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