Support multiple variables in single interpolated string

[MellKam]

The current behaviour for multiple variables:

{
	"hello": "a: {# a #}, b: {# b #}, c: {# c #}"
}

Generated type:

hello: { a?: unknown } | undefined;

Result:

{t("hello", { a: "A", b: "B", c: "C" })} 
// output: "a: A"

[Alexandre-Fernandez]

Indeed this should be added. I thought I already coded that, I'll try adding that asap.

[Alexandre-Fernandez]

#63

[Alexandre-Fernandez]

Btw I'll add this after I finish my current personal project, until then I'll only patch bugs.