Add RenderScheduleOrder resource to allow for RenderApp Schedule changes

[Zeophlite]

Objective

• Render schedules are static, compared to the main schedules in the main world that can be dynamically added with the MainScheduleOrder resource
• This is necessary to allow BRP introspection of schedules in the Render world (see BRP Add schedule.graph endpoint #23452 )

Solution

• Add RenderScheduleOrder resource that allows for ordering of Render schedules

Testing

• CI
• Add BRP to render app #23446

[alice-i-cecile]

I'm not sure I understand the rationale well enough here. Can you restate the problem we're trying to solve for me using more words?

[atlv24]

So, I don't think this is the right approach. You can do this in a renderstartup system: just check if your resource is already initialized, and only do so if it hasn't been. The render world is never wiped, so you can store that state downstream and we don't need a RenderStartup change to accomodate this. Am i missing something?

[Zeophlite]

Hmm okay I can be convinced on that, but I still need the RenderMainScheduleOrder to schedule things outside the main Render schedule (that way things like #23452 work) - will remove PreRenderStartup

[Zeophlite]

Okay so this is much simpler now - this follows the same as the main world Main schedule phases (see MainScheduleOrder )

[kfc35]

I don’t have any blocking comments

[alice-i-cecile]

I like the new direction much better here.

[BenjaminBrienen]

nit: The name of this function should probably be updated