Change to Luxon

[Silverfeelin]

Checklist

• [x] Clock shows proper local and Sky time.
• [x] Date format can be changed in settings
• [x] Example date is correct and updates with changing the format.
• [x] Date format resets to default due to different formats between library
• [x] Finding an item will navigate to the latest source.
• [x] Spirit trees (season spirits) are sorted most recent to oldest.
• [x] Spirit grid can be sorted oldest first or newest first based on their addition to the game (i.e. season date).
• [x] TS & SV lists are sorted newest first.
• [x] Current season card shows correct dates (dashboard).
• [x] Season daily check-in resets at Sky reset time.
• [x] Current event card shows correct dates (dashboard).
• [x] Event daily check-in resets at Sky reset time.
• [x] Current TS card shows correct dates (dashboard).
• [x] Current SV card shows correct dates (dashboard).
• [x] Seasons page shows seasons in the correct year.
• [x] Season page shows correct dates.
• [x] Events page shows correct year for most recent event.
• [x] Event page shows correct dates.
• [x] Whenever a date in future is shown, the date shows the correct amount of days by comparing current timezone to Sky reset time.
• [x] Whenever a duration is shown, the number of days is accurate to the start and end date (since end date is inclusive this means 2023-01-01 to 2023-01-03 is 3 days).

[Silverfeelin]

Can use MockDate then navigate to a page to test if dates are correct. For example for me reset time is 9 AM so the label '2 days left' should change to 'last day' when I go from local time MockDate.set('2024-1-15 8:59') to MockDate.set('2024-1-15 9:00').

https://cdn.jsdelivr.net/npm/mockdate@3.0.5/lib/mockdate.min.js

[Silverfeelin]

Going to merge this after some double checking. This means the initial end date for the new season will be wrong until merged.