First merge from dev to main

[SreenikethanI]

Added a bunch of READMEs (4e6636116ec2e1b54c119a4e1764bb26b346dff0 and 8210a8e218bf599a79f3ad2b81d3b6efecd8e695) to each folder. Functional changes:

• 17f0e4132be72f756fdb70931118dd89e9214979: Created CSV for Y2S1 (2023) courses
• 573e1e15df3314fc6844d1c12b6e86317b078a0c: Placed courses info into separate JSON files
• 3a65fe0bb4368794bdfbcb49a80949e7267ed3f0: Handle missing courses from the courses list