feat: migrate events to Google Calendar API

[BekahHW]

What

Replaces the Craft CMS / Solspace Calendar GraphQL data source for events with the Google Calendar API.

Why

Part of the migration off Craft CMS. Events were the last piece of data being fetched from Craft at build time. This removes that dependency entirely.

How

• Rewrote src/data/events.ts to fetch events from Google Calendar API using two new env vars:
  • GOOGLE_CALENDAR — API key (already added to Netlify)
  • GOOGLE_CALENDAR_IDS — comma-separated list of calendar IDs (already added to Netlify)
• Fetches from all 3 VC calendars in parallel (Coffees, Lunch & Learns, Coffee Table Groups)
• Merges, deduplicates cancelled events, sorts by start time, and slices to the requested limit
• Maps Google Calendar fields to the same EventItem shape the events page already expects:
  • summary → title
  • start.dateTime → startDateLocalized
  • end.dateTime → endDateLocalized
  • description → eventCalendarDescription (sanitized)
• Falls back to mock data if env vars are missing (same pattern as before)
• Preserves all "Add to Calendar" link generation (Google, Outlook, ICS) unchanged
• Does not expose the location field (where Zoom links live) — keeps member-only join links private
• Removes all graphql-request, CMS_URL, and CMS_TOKEN usage from this file

After merge

• Remove CMS_URL and CMS_TOKEN from Netlify env vars (once both this and the podcast PR are merged)
• Cancel Craft CMS subscription
• Optionally remove graphql-request from package.json if no other files use it

[netlify]

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[JoeKarow]

@BekahHW I'm going to merge PR #1501 and then do the CraftCMS -> Google Calendar changes to the slack event webhooks on this PR, so we keep the CraftCMS-> GCal changes together.