Add "display name" field for inputs

[KrisF-Midnight]

Feature description

Currently for input fields only the ID is shown as title when you execute the flow from the UI.
It'd be nice to have a separate field dedicated just for the title itself.
If no title is set in the flow, then kestra could default to showing the id.

[anna-geller]

That's a very reasonable idea! We'll take it as a feature request and until it'S released, you can use the description field that will likely help a bit

[anna-geller]

@fhussonnois given you're currently working on inputs, could you tackle this one too? would be great to get it in 0.19 as planned