Added squeeze_ method to the Paddle frontend

[he11owthere]

closes #22452

[github-actions]

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[he11owthere]

Please add 'bfloat16' in the with_unsupported_dtypes decorator before running the tests until the issue with ivy.Array.repr method has been fixed as mentioned by Ved in #21447. Thank you! 🙂

[ZoeCD]

Thank you for your contribution! lgtm! Could you please update your branch, and push the changes? I'll merge this PR right away!

[he11owthere]

@ZoeCD, merge conflicts have been resolved. Thanks! 🙂