pyzes fails to load ze_loader DLL on Windows — hardcoded "64.dll" suffix

[allanmeng]

On some Intel GPU driver installations, the Level Zero loader DLL is named
ze_loader.dll (without the 64 suffix) in C:\Windows\System32\.

pyzes.py line 75 hardcodes:
libName + "64.dll" → "ze_loader64.dll" ❌ not found

Suggested fix: add ze_loader.dll (without 64 suffix) to the possible_paths
list as a fallback before the driver-store glob attempts.

Reproduced on:

• Windows 11
• Intel Arc B580
• Driver: 32.0.101.8725
• pyzes 0.1.2