Update to bevy 0.19 & vello 0.9

[nixonyh]

A few blockers for the update:

1. vello_svg needs to be updated first (Update to vello 0.9 velato#110)
2. velato needs to be updated first (Update to vello 0.9 vello_svg#85)
3. bevy_async_task is kinda outdated at this point? (needs to find an alternative)

nonetheless, the code compiles and example runs now.

[RobertBrewitz]

When builds and deps are updated this lgtm

[nixonyh]

Do we want to wait for the deps (vello_svg & velato) to release first?

[StarArawn]

Any chance this might go out soon? If it helps I've tested it quite extensively and it works well.

[RobertBrewitz]

Do we want to wait for the deps (vello_svg & velato) to release first?

Yep

[RobertBrewitz]

Any chance this might go out soon? If it helps I've tested it quite extensively and it works well.

Yep

[TheTrueWhiteOwl]

Should this branch also have the goal of adding bsn support to this crate's components?

[RobertBrewitz]

Should this branch also have the goal of adding bsn support to this crate's components?

Not sure how much work that would entail, my gut feeling say it should be a separate branch and PR.

[nixonyh]

Had a bug I wanted to fix with window aspect ratio / viewport size but didn't had the time. I'm going to merge now and create a new branch to fix it.