Text components refactor

[ickshonpe]

Objective

The names of some of the components in bevy_text are confusing and inconsistent:

• TextLayoutInfo
  Contains the final computed text layout. The -Info suffix is redundant and potentially confusing.

• TextLayout
  Holds the settings for text justification and line breaking. Not the layout.

• ComputedTextBlock
  This holds the cosmic-text buffer. The name suggests that it contains the final result of a text relayout, but the buffer can be out-of-date until it is updated during the text schedule.

Solution

• Rename
  • TextLayoutInfo -> ComputedTextLayout
  • ComputedTextBlock -> TextBuffer
• Remove TextLayout.
• Make JustifyText and LineBreak into components.
• Require JustifyText and LineBreak on Text and Text2d.

Fixes #19467

[github-actions]

Your PR caused a change in the graphical output of an example or rendering test. This might be intentional, but it could also mean that something broke!
You can review it at https://pixel-eagle.com/project/B04F67C0-C054-4A6F-92EC-F599FEC2FD1D?filter=PR-19444

If it's expected, please add the M-Deliberate-Rendering-Change label.

If this change seems unrelated to your PR, you can consider updating your PR to target the latest main branch, either by rebasing or merging main into it.

[rparrett]

Just noting that this seems to be going in the opposite direction of a sentiment expressed here: #15014 (comment) with regard to the new LineBreak and JustifyText components.

I think this might merit more discussion to reduce potential churn. The main issue I am seeing with TextLayout at the moment is that I think LineHeight should be in there instead of in TextFont.

[kristoff3r]

Just noting that this seems to be going in the opposite direction of a sentiment expressed here: #15014 (comment) with regard to the new LineBreak and JustifyText components.

I think this might merit more discussion to reduce potential churn. The main issue I am seeing with TextLayout at the moment is that I think LineHeight should be in there instead of in TextFont.

Ah yeah this was heavily discussed there and also in #15591 and #15797, I wasn't aware of that. I think this needs review from the people involved in those discussions.