new command url parse (#6854) and url subcommands tests (#7124)

*code refactor from PR tips & clippy fixes

*added username, password, and fragment

*commands `url host`, `url scheme`, `url query`, and `url path` removed

*tests refactoring - avoid formatted output

crates/nu-command/src/default_context.rs

@@ -405,10 +405,7 @@ pub fn create_default_context() -> EngineState {
             Fetch,
             Post,
             Url,
-            UrlHost,
-            UrlPath,
-            UrlQuery,
-            UrlScheme,
+            UrlParse,
             Port,
         }