Adds calendar widget - #2331

Category

Feature

Overview

Implements calendar widget, to display feed of events from an ical feed.

Issue Number

Fixes #1201
Fixes #1903

Details

Works with Nextcloud, Google, Proton, iCloud, Outlook, Radicale, Baïkal, etc. And any calendar which can surface an ical feed. Supports both webcal:// and normal https route. Always needs to be proxied.

Allows for combining multiple calendars onto one feed, and color coding them. Supports all-day events, and can normalize date/time to local.

Example:

- type: calendar
  options:
    limit: 15
    calendarUrl:
      - url: https://calendar.google.com/calendar/ical/xxxx/private-xxxx/basic.ics
        name: Personal
        color: '#5cabca'
      - url: webcal://p12-calendars.icloud.com/published/2/xxxx
        name: Family
        color: '#e8j54a'

Or

- type: calendar
  useProxy: true
  options:
    calendarUrl: https://www.footballcalculator.co.uk/calendar?team=West+Ham
    limit: 5