build: migrate from commonJS to ES modules:

• migrated from CommonJS to ES modules as it is easier to work with

refactor: modularize code and improve readability:

• separated router logic into middleware and services to improve readability.
• added JS docs for certain functions
• corrected the emailRegex as it wasn't correctly handling illegal email formats
• wrote wrapper functions (refer this) to avoid duplicating code

fix (schema.sql): syntactical errors and circular foreign key references:

• fix circular foreign key reference between events and teams table
• fix syntactical error (missing closing bracket for checking length of lead_name in teams table

fix: add missing NOT NULL checks:

• had forgotten to add NOT NULL checks for certain fields, added them in
• remove the length constraint on qr_string as it is yet to be determined

fix: db now initialises automatically:

• file restructuring performed yesterday broke the automatic db initialisation. this was fixed and the code for the same now lies solely in backend/db/utils/execute.js

feat: add generic update record function

• added a generic function to execute the UPDATE commands using the id attribute as the identifier

feat: create and edit events

• added routing and logic for creating and editing events.
• added validation for validating event dates and names.

refactor: use common table for all non-participants and add roles for the same

• added the shortlisted bool field in the participant table
• used a common table dbAuthorisedUsers that will hold records of all non-participants (i.e, admins, organisers, volunteers)
• addded a role field to differentiate between admins, organisers, and volunteers

feat: add generic select function

• wrote the generic select function to query the database
• it is designed to support combinations of 'AND' and 'OR'

feat: auto-check whether an admin exists

• queries the db for admins. if no admin exists, then one is created using details from the console input.

feat: integrate google oauth

• Integrated the Google OAuth component into frontend.
• Wrote handlers on the backend to verify the credentialResponse.credentials JWT token received from frontend
• If the token is valid, two http-only cookies namely 'access' and 'refresh' are set with appropriate expiry

fix: semantic errors in checkAdminRecords and promptAdminCreation

• Added missing await and one missing export in the automatic admin creation flow