support for datetime format Windows mrt.log

[jtmoon79]

Summary

Support parsing Windows 11 C:/Windows/debug/mrt.log

---------------------------------------------------------------------------------------
Microsoft Windows Malicious Software Removal Tool v5.110, (build 5.110.19957.2)
Started On Tue Feb 21 06:41:02 2023

Engine: 1.1.19900.2
Signatures: 1.381.1972.0
MpGear: 1.1.16330.1
Run Mode: Scan Run From Windows Update

Results Summary:
----------------
No infection found.
Successfully Submitted Heartbeat Report
Microsoft Windows Malicious Software Removal Tool Finished On Tue Feb 21 06:41:29 2023

Return code: 0 (0x0)

---------------------------------------------------------------------------------------

[jtmoon79]

According to file

mrt.log: Unicode text, UTF-16, little-endian text, with CRLF, LF line terminators

See #16

[jtmoon79]

830dbbd5e18ad8d53727026536b1b07c58411c35 fixes the UTF-8 case. Not the UTF-16 case (which is #16).