Have NewTypes for end user claims wrap String instead of Url

For the non-essential end user claims, it matters less that this crate be
strict about parsing them as URLs. This helps ensure interoperability with
some less conformant providers, such as those that implement SMART-on-FHIR
alongside OpenID Connect. SMART-on-FHIR and OIDC have conflicting
specifications for the `profile` claim, for example.

src/id_token.rs

@@ -698,15 +698,13 @@ mod tests {
                             None,
                             EndUserProfileUrl::new(
                                 "https://example.com/profile?id=12345".to_string(),
-                            )
-                            .unwrap(),
+                            ),
                         ),
                         (
                             Some(LanguageTag::new("es".to_string())),
                             EndUserProfileUrl::new(
                                 "https://example.com/profile?id=12345&lang=es".to_string(),
-                            )
-                            .unwrap(),
+                            ),
                         ),
                     ]
                     .into_iter()
@@ -718,15 +716,13 @@ mod tests {
                             None,
                             EndUserPictureUrl::new(
                                 "https://example.com/avatar?id=12345".to_string(),
-                            )
-                            .unwrap(),
+                            ),
                         ),
                         (
                             Some(LanguageTag::new("es".to_string())),
                             EndUserPictureUrl::new(
                                 "https://example.com/avatar?id=12345&lang=es".to_string(),
-                            )
-                            .unwrap(),
+                            ),
                         ),
                     ]
                     .into_iter()
@@ -736,12 +732,11 @@ mod tests {
                     vec![
                         (
                             None,
-                            EndUserWebsiteUrl::new("https://homersimpson.me".to_string()).unwrap(),
+                            EndUserWebsiteUrl::new("https://homersimpson.me".to_string()),
                         ),
                         (
                             Some(LanguageTag::new("es".to_string())),
-                            EndUserWebsiteUrl::new("https://homersimpson.me/?lang=es".to_string())
-                                .unwrap(),
+                            EndUserWebsiteUrl::new("https://homersimpson.me/?lang=es".to_string()),
                         ),
                     ]
                     .into_iter()

src/types.rs

@@ -611,18 +611,20 @@ new_type![
     EndUserPhoneNumber(String)
 ];
 
-new_url_type![
+new_type![
     ///
     /// URL of end user's profile picture.
     ///
-    EndUserPictureUrl
+    #[derive(Deserialize, Eq, Hash, Ord, PartialOrd, Serialize)]
+    EndUserPictureUrl(String)
 ];
 
-new_url_type![
+new_type![
     ///
     /// URL of end user's profile page.
     ///
-    EndUserProfileUrl
+    #[derive(Deserialize, Eq, Hash, Ord, PartialOrd, Serialize)]
+    EndUserProfileUrl(String)
 ];
 
 new_type![
@@ -634,11 +636,12 @@ new_type![
     EndUserTimezone(String)
 ];
 
-new_url_type![
+new_type![
     ///
     /// URL of end user's website.
     ///
-    EndUserWebsiteUrl
+    #[derive(Deserialize, Eq, Hash, Ord, PartialOrd, Serialize)]
+    EndUserWebsiteUrl(String)
 ];
 
 new_type![