Expose style attribute serializer as a function

[fonsp]

HypertextLiteral has the ability to format a style attribute from a Julia Dict, Pair or NamedTuple:

@htl "<img style=$((width="10px", background="white"))>"

It would be cool if this ability was also available as a standalone function:

julia> HypertextLiteral.serialize_style_attribute((width="10px", background="white")) # or a better name
"width: 10px; background: white;"

I ran into this several times when working with widgets that set their initial style with HypertextLiteral (accepting style as a user input), but a later update will set the style from JS, so I need to give the new style attribute value to JS as a string.

My current solution is:

serialize_style_attribute(nt) = @view repr(
	MIME"text/html"(), 
	@htl "<div style=$(nt)>"
)[13:end-2]