Cross platform dynamic assets

[ealmloff]

Specific Demand

Different platforms deal with creating dynamic assets differently. Dioxus should provide a way to create a dynamic asset (like a generated image) that works on any platform.

Implement Suggestion

Each renderer would need to implement dynamic assets differently:

• Web: use an object url
• Liveview: use a temporary asset url
• Fullstack: use a temporary asset url on the server, then if it is dynamically created on the client use a object url
• Desktop: use an asset url based on Add custom asset handler to desktop config #1719

[jkelleyrtp]

Maybe as part of our work on overhauling the FilesEngine we can implement

VirtualFile::new()

for a slightly more consistent API?

We could also use the dirs crate for putting these resources into the appropriate system storage that also works on web (indexeddb / blob / localstorage)
https://crates.io/crates/dirs

[Sitin]

Do we have any progress with this feature?