Short syntax string parameter for directives

[sondh0127]

Is your feature request related to a problem? Please describe.
I try using integrate the third library (specifically, https://github.com/tw-in-js/twind) using svelte use:action, and the parameters pass to action is usually a string, in order to use directive I have to wrap the param in a bracket {} and a quote ''. It seems much more than we actually need use:action={'mystring-params'}

	function tw(node: HTMLElement, twClass: string) {
		node.className = twind(twClass)
		return {
			update(twClass: string) {
				node.className = twind(twClass)
			},
			destroy() {},
		}
	}

	<div use:tw={'flex items-center justify-center'}>

Describe the solution you'd like
It would be nice if svelte can support passing literal string params in the directive. Something like

	<div use:tw="flex items-center justify-center">

How important is this feature to you?
In addition to the convenience short syntax, for example, I can take advantage of Tailwind IntelliSense.

[stale]

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