Firstly, thank you for creating this software - it is truly a magnificent piece of work.
I am attempting to write my first custom action by using the HelloWorld example, but I'm getting confused with paths. When you say "create a PHP file at src/Action/HelloWorld.php" where do you mean literally? Should that be in a vendor/fusio/adapter src directory or in a newly created directory somewhere?
Then do I add the namespace path to provider.php as: