Convert Project to TypeScript

[VikramSinghMTL]

Migrate the existing JavaScript codebase to TypeScript for better type safety, improved developer experience, and easier maintainability.

• Set up TypeScript in the project (install typescript and create a tsconfig.json file).
• Convert all JavaScript files to TypeScript (.ts).
• Define interfaces and types for core functionalities, such as:
  • Data models (e.g., assessments, grade rows).
  • UI elements (e.g., modal options, event handlers).
• Refactor code to fix any type errors introduced during the migration.
• Update the Rollup configuration to support TypeScript (@rollup/plugin-typescript).
• Ensure tests and GitHub Actions workflows work seamlessly with TypeScript.
• Update the README.md to reflect the migration and provide instructions for building and testing the TypeScript codebase.