[@svelteui/core]: add PasswordInput component

[khalibloo]

Description

Added PasswordInput component.

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• [x] Read the Contributing guide
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[khalibloo]

Note that in the disabled state, we still have the visibility toggle unlike in Mantine. I could not find a way to conditionally render a slot in Svelte.

Edit: Resolved now

[BeeMargarida]

Thank you for this amazing contribution! :raised_hands: :partying_face: