Add ESLint Workflow for Frontend

[GautamBytes]

What does this PR do?

This PR introduces a new GitHub Actions workflow to automatically run ESLint checks on the frontend workspace for every pull request.

Why is this change important?

This helps ensure code quality and consistency by catching linting errors early in the development process, before they are merged into the main branch. It automates a key quality gate for the project.

Note: This workflow currently only targets the frontend workspace, as the backend does not have a dedicated lint script at this time.

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[GautamBytes]

/assign @Monokaix