enhance achievements UI and implement notification history

    Implements locked/unlocked sections for achievements, adds a notification history panel to the steam overlay, and
  resolves build configuration issues.

    Detailed Changes:
      overlay: Added collapsible headers separating unlocked and locked achievements in the overlay UI.
      history: Implemented a Notification History window allowing users to browse formatted, cached timestamps and
  type-labeled history, with support for clearing notifications.
      robustness: Modified achievement notification logic to verify overlay readiness, preventing potential crashes
  during notification queuing.
      build: Corrected premake5.lua build properties for zlib and abseil random internal dependencies.
      cleanup: Deleted local redundant json.hpp header in favor of standard json/json.hpp.

Author: Yasinnet0