Refactor parseArtSci function

[r-weng]

Proposed Changes

This pull request refactors the parseArtSci function in app/WebParsing/ArtSciParser.hs by introducing a new function, parseDepartmentList, to handle parsing of department lists. Additionally, parseDepartmentList now ignores department pages with no courses, duplicate courses, and program areas belonging to a college.

Type of Change

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Type	Applies?
🚨 Breaking change (fix or feature that would cause existing functionality to change)
✨ New feature (non-breaking change that adds functionality)
🐛 Bug fix (non-breaking change that fixes an issue)
🎨 User interface change (change to user interface; provide screenshots)
♻️ Refactoring (internal change to codebase, without changing functionality)	X
🚦 Test update (change that only adds or modifies tests)
📦 Dependency update (change that updates a dependency)
🔧 Internal (change that only affects developers or continuous integration)

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[coveralls]

Coverage Report for CI Build 48

Coverage decreased (-0.1%) to 58.532%

Details

• Coverage decreased (-0.1%) from the base build.
• Patch coverage: 12 uncovered changes across 1 file (0 of 12 lines covered, 0.0%).
• No coverage regressions found.

Uncovered Changes

File	Changed	Covered	%
app/WebParsing/ArtSciParser.hs	12	0	0.0%

Coverage Regressions

No coverage regressions found.

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Coverage Stats

Relevant Lines:	3953
Covered Lines:	2375
Line Coverage:	60.08%
Relevant Branches:	964
Covered Branches:	503
Branch Coverage:	52.18%
Branches in Coverage %:	Yes
Coverage Strength:	164.22 hits per line

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💛 - Coveralls

[david-yz-liu]

@r-weng This is good, but please write tests for this new function