Add Hack_NCState 2027 (opens soon)

[ChimdumebiNebolisa]

Summary

• Add Hack_NCState 2027 (Feb 6–7, 2027) as opens_soon
• Static HTML says registration open, but runtime JS sets registrationOpened = false and shows interest-form messaging
• Add Raleigh, NC geocode; regenerate README/banner

Closes #170

Evidence

• https://hackncstate.org/ + scripts/constants.js (registrationOpened = false)
• Countdown JS switches hero to “Registration isn't available yet” / interest form
• Do not use the TODO registrationDeadline as a participant deadline

Test plan

• Listing state=opens_soon (Website badge, not Register)

[Jose-Gael-Cruz-Lopez]

Synced with main and corrected state from open to opens_soon.

The raw HTML looks like registration is open — it hardcodes "Registration is now open!", a "Registration closes in" countdown, and a "Register Free" button. But scripts/constants.js sets:

const registrationOpened = false;

so countdown.js rewrites the hero on load to "Registration isn't available yet... please fill out the interest form below" and swaps the button to an interest form. What a visitor actually sees is an interest form.

⚠️ Also worth flagging for whenever registration does open: constants.js contains registrationDeadline = 2027-01-30, but it is commented // TODO: change to actual registration deadline (rn it is 7 days before the hackathon start date) — a placeholder derived from the event date, so it must not be published as a deadline. This listing correctly carries none.