Add Array support to ParamValue

[AntoineKM]

Hey @alii, it could be great to be able to do things like that:

pathcat("https://example.com", "/:id", {
    id: "123",
    foo: ["b", "a", "r"],
});
// => 'https://example.com/123?foo=b&foo=a&foo=r'

[alii]

Fixed in #2 (thank you!) Released as 1.3.0 https://www.npmjs.com/package/pathcat/v/1.3.0

[alii]

Also published to jsr.io here - https://jsr.io/@alistair/pathcat@1.3.0