feat: customize gradio components with lightning colors

[KogaiIrina]

What does this PR do?

This PR is customizing the gradio components with lightning colors.

If you want to check out the newly styled-components you can run lightning run app lit_gradio_interface_demo.py in the tests dir.

These changes were discussed with @aniketmaurya here:

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PR review

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[aniketmaurya]

@Borda can you please help with the PR review?