feat: add NeStepper and minor fixes

[andre8244]

Add NeStepper component and Storybook stories

Other changes:

• NePaginator: fix disabled state of Next button
• NeDropdown: make alignToRight prop optional
• NeTableRow: add transition to hover color

[Copilot]

Pull Request Overview

This PR introduces a new NeStepper component that displays progress through a multi-step workflow using a progress bar and step indicators. The PR also includes several minor improvements to existing components.

Key changes:

• Added NeStepper component with visual step progression tracking
• Fixed NePaginator's Next button disabled state logic
• Made NeDropdown's alignToRight prop optional to improve API ergonomics

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/components/NeStepper.vue	New component implementation with progress bar and step labels
stories/NeStepper.stories.ts	Storybook stories for the new NeStepper component
src/main.ts	Export statement for the new NeStepper component
src/components/NeTableRow.vue	Added transition effect to hover state
src/components/NePaginator.vue	Fixed Next button disabled condition to handle edge cases
src/components/NeDropdown.vue	Made alignToRight prop optional

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