Add/Improve info for unreal docs

[moonyuet]

Changelog Description

Improve/Add Info for unreal docs

• Sequence Hierarchies
• Connect animation and camera to the sequence loaded from layout
• Camera
• Animation
• Layout
• UAssets(Admin Docs)

Additional info

n/a

[LiborBatek]

@MustafaJafar @moonyuet shouldnt be that publish template already defined in the AYON as defaults? or at least we should do that and only if not present due to older deployment put that template setup section as a solution when not setuped? at least by Note paragraph at the very begining of that template setup section?

[MustafaJafar]

@MustafaJafar @moonyuet shouldnt be that publish template already defined in the AYON as defaults?

Not yet. Here's the PR for reference ynput/ayon-backend#328

I totally agree with you let's convert it to note.

edit: I've added it in 4249a26

[MustafaJafar]

This PR looks cool.

Side note:
I've expressed my personal about the structure of unreal docs. which can be tackled in another PR.

#260