Migrate NUSMods to AY24/25

[kokrui]

Context

This PR migrates NUSMods scraper and the NUSMods frontend to AY24/25 (Sem 1).

Academic Calendar + 2024 Holidays and Well-Being Day from https://nus.edu.sg/registrar/docs/info/calendar/ay2024-2025.pdf

CourseReg Schedule from https://nus.edu.sg/coursereg/docs/UGCPE_CourseRegSchedule.pdf and https://www.nus.edu.sg/coursereg/docs/GD_CourseRegSchedule.pdf

Other Information

Pending NUS API update before merge

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Name	Status	Preview	Comments	Updated (UTC)
nusmods-export	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 7, 2024 3:26pm
nusmods-website	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 7, 2024 3:26pm

[ravern]

LGTM so far, pending testing of scraper

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 53.60%. Comparing base (ada49e0) to head (a233ac3).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #3741 +/- ## ======================================= Coverage 53.60% 53.60% ======================================= Files 274 274 Lines 6025 6025 Branches 1446 1446 ======================================= Hits 3230 3230 Misses 2795 2795 ```

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