VPN-4262: Update Url to return url and front fields.

The VPN client is using the `Url` type alot now and in order to avoid
double URL-parsing we would like the content of the `Url` type exposed.

common/http-api-client/src/url.rs

@@ -183,6 +183,11 @@ impl Url {
         })
     }
 
+    /// Returns the underlying URL
+    pub fn inner_url(&self) -> &url::Url {
+        &self.url
+    }
+
     /// Returns true if the URL has a front domain set
     pub fn has_front(&self) -> bool {
         if let Some(fronts) = &self.fronts {
@@ -201,6 +206,11 @@ impl Url {
             .and_then(|url| url.host_str())
     }
 
+    /// Returns the fronts
+    pub fn fronts(&self) -> Option<&[url::Url]> {
+        self.fronts.as_deref()
+    }
+
     /// Return the string representation of the host (domain or IP address) for this URL, if any.
     pub fn host_str(&self) -> Option<&str> {
         self.url.host_str()