Add update parameter to overview endpoint

[Nakroma]

I'm submitting a...

• Bug report
• Feature request
• Documentation issue or request

Current behavior

Currently theres no scannedAt param on https://api.nexushub.co/wow-classic/v1/items/ overview endpoint.

Expected behavior

There should be!

Minimal reproduction of the problem

Environment

Browser:

• Chrome (desktop) version:
• Chrome (Android) version:
• Chrome (iOS) version:
• Firefox version:
• Safari (desktop) version:
• Safari (iOS) version:
• IE version:
• Edge version:

For development issues:

• Node version:
• Operating System:

Additional Description