Add support for LAST_SLEEP_TIME and LAST_WAKE_TIME in SysInfo plugin

[thatsIch]

SysInfo plugin: Added new LAST_SLEEP_TIME and LAST_WAKE_TIME measurements to the SysInfoType option.

https://docs.rainmeter.net/manual-beta/plugins/sysinfo/#SysInfoType

Added in version July 3, 2020 - Revision 3397