WebContent+WebDriver: Move the Get Current URL command to WebContent

Author: https://github.com/trflynn89
Commit: 3ba6b5a7cb
Pull-request: https://github.com/SerenityOS/serenity/pull/15981
Reviewed-by: https://github.com/linusg ✅

Userland/Services/WebContent/WebDriverClient.ipc

@@ -3,4 +3,5 @@
 endpoint WebDriverClient {
     set_is_webdriver_active(bool active) =|
     navigate_to(JsonValue payload) => (Web::WebDriver::Response response)
+    get_current_url() => (Web::WebDriver::Response response)
 }