Format URLs for fetch requests using templates and substitution values.

Usage

``` use format_url::FormatUrl;

let url = FormatUrl::new("https://api.example.com/") .withpathtemplate("/user/:name") .withsubstitutes(vec![("name", "alex")]) .withqueryparams(vec![("active", "true")]) .formaturl();

assert_eq!(url, "https://api.example.com/user/alex?active=true"); ```

Wishlist

• Support for lists and nested values. (serdeurlencoded -> serdeqs)
• Support receiving query params as any value serdeurlencoded or serdeqs can serialize.
• Support receiving path template substitutes as a (Hash)Map, perhaps even a struct with matching fields.