Fixes #38991 - Add chained task dependencies in the UI

[ianballou]

Adds dependency information to the Foreman Tasks UI in a new Dependencies tab. Each dependency list is a table that shows the name of the task and the status.

Relates to Dynflow/dynflow#446

[ianballou]

Katello PR to test with: Katello/katello#11540

[adamruzicka]

This is generally what I had in mind, however the tests are red

<screenshot>

Would things fit if a task was blocking and blocked at the same time?

[adamruzicka]

I can't say I'm a huge fan of ad-hoc data formatting. Could we instead have a main rabl json template with this and have the other templates we already have extend it?

[ianballou]

@adamruzicka I moved the data modeling part to a rabl json file and included it in the rabl json here as a partial.

[ianballou]

That way the data is modeled once instead of twice. It's not exactly 'extending' as you mentioned, but lemme know if it does the trick for ya.

[ianballou]

Would things fit if a task was blocking and blocked at the same time?

Here is what it looks like:

Here it is with a squished window:

At the moment, with content views, there is no way to achieve this naturally since composite content views cannot be in other composite content views. But, I could see this happening as more features start to use chaining.