feat: add TypeScript typings for AlgoScope SDK

[harsharajkumar-273]

Pull Request Summary

Title: feat: add TypeScript typings for AlgoScope SDK

What changed?

This pull request adds full TypeScript type definition files for the public AlgoScope utilities:

• Added a library root entry point index.js which exports modules from src/lib/ (utils, favorites, testCaseStore, version).
• Created index.d.ts which declares the TypeScript types, helper function signatures, parameter interfaces, and return types for the exported helpers.
• Added tsconfig.json defining compiler settings for type-checking.
• Updated package.json to configure "main": "index.js", publish typings via "types": "index.d.ts", add a "type-check" script, and add typescript as a devDependency.
• Integrated a Run Type Checker (TypeScript) check step into the CI workflow (.github/workflows/pipelines.yml) under the code-quality job to automatically validate type safety for incoming PRs.

Why is this needed?

TypeScript consumer projects importing AlgoScope modules currently lack proper typings, leading to missing autocomplete/IntelliSense in modern IDEs and compiler type resolution warnings. This PR resolves #633.

Closes #633

Type of Change

• feat - New user-facing feature or algorithm capability
• build - Build system, dependency, or packaging change
• ci - GitHub Actions, Docker, Vercel, or release automation change

Release Notes

Release note category:

• Added

Release note entry:

• Added TypeScript typings (index.d.ts) for public utility functions and index entry points, integrating type checks into the CI pipeline.

Testing and Verification

• npm ci or npm install
• npm run build
• Manual browser testing at http://localhost:5173
• No new console errors or warnings

Additional testing notes:

• Ran npm run type-check (tsc check) locally which compiles cleanly with zero typing declaration errors.

UI Evidence

Not applicable (non-visual code structure/SDK change).

CI/CD and Deployment Impact

• Updates GitHub Actions or release automation (added type check step to pipelines.yml)
• Adds, removes, or updates npm dependencies (added devDependency typescript)

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📥 Commits

Reviewing files that changed from the base of the PR and between de62999 and c72221a.

⛔ Files ignored due to path filters (1)

• package-lock.json is excluded by !**/package-lock.json

📒 Files selected for processing (5)

• .github/workflows/pipelines.yml
• index.d.ts
• index.js
• package.json
• tsconfig.json

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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