feat: parser now writes, added missing fields

updated docs, example, extensive use of Traits with better handling.
valid level 9 phpstan codebase.

example.php

@@ -6,6 +6,6 @@ $client = new Ivuorinen\BusinessDataFetcher\BusinessDataFetcher();
 try {
     $results = $client->getBusinessInformation("1639413-9");
     print_r($results);
-} catch (\GuzzleHttp\Exception\GuzzleException $e) {
+} catch (Exception $e) {
     var_dump($e);
 }