feat: add GitHub Action to check for unused files, exports and dependencies and cleanup

[satyanvm]

What kind of change does this PR introduce?

This PR adds a GitHub Action to check for unused files, exports and dependencies and cleans up existing unused code.

Issue Number:

Fixes #99

Did you add tests for your changes?

N/A

Snapshots/Videos:

N/A

If relevant, did you update the documentation?

N/A

Summary

There are unused code in the repository which this PR cleans up and also adds GitHub Action that checks for unused code on every PR.
#99

Does this PR introduce a breaking change?

No

Other information

I have used Knip tool for checking unused code, it's a widely popular and well maintained tool in the TypeScript/JavaScript community.

Have you read the contributing guide?

Yes

Summary by CodeRabbit

• New Features

  • Enhanced CI/CD pipeline with automated code quality validation checks to ensure codebase integrity and identify unused dependencies.

• Refactor

  • Removed multiple utility components from the codebase to streamline the project structure and eliminate unused elements.

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Caution

Review failed

The pull request is closed.

Walkthrough

Introduces Knip for detecting unused files, dependencies, and exports in the CI pipeline. Adds Knip configuration, a CI workflow step to validate code cleanliness, the knip devDependency, and removes four identified unused React component files.

Changes

Cohort / File(s)	Summary
CI/Configuration Setup .github/workflows/pull-request.yml, knip.json, package.json	Added knip devDependency (^5.71.0), created knip.json with project globs for src and docs directories and ignore rules for Docusaurus, and inserted a new CI step to run npx knip for unused code detection in the Code-Quality-Checks job.
Removed Unused Components src/utils/ActionButton.tsx, src/utils/HomeCallToAction.tsx, src/utils/Section.tsx, src/utils/TwoColumns.tsx	Deleted four React functional component files that were identified as unused: ActionButton (anchor-based button wrapper), HomeCallToAction (call-to-action fragment with ActionButtons), Section (dynamic element wrapper with variants), and TwoColumns (two-column layout component).

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

• Verify the four removed component files are truly unused across the codebase and no imports remain
• Confirm the knip.json configuration appropriately targets the project structure and correctly excludes Docusaurus dependencies
• Validate the new workflow step placement and execution within the CI pipeline

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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📜 Recent review details

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 3241ecf and 609e006.

⛔ Files ignored due to path filters (1)

• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

📒 Files selected for processing (7)

• .github/workflows/pull-request.yml (1 hunks)
• knip.json (1 hunks)
• package.json (1 hunks)
• src/utils/ActionButton.tsx (0 hunks)
• src/utils/HomeCallToAction.tsx (0 hunks)
• src/utils/Section.tsx (0 hunks)
• src/utils/TwoColumns.tsx (0 hunks)

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