add vite-svelte example

[jeromeleong]

It is a template for Svelte SSR with Salvo-rs and Vite.

[Valerioageno]

That is a great addition!
Two things are missing for merging it:

1. Add the example link from into the main Cargo.toml

[[example]]
name="vite-svelte"
path="examples/vite-svelte/backend/main.rs"

2. Build a server side bundle and put it into the tests/assets folder , then create a test file for svelte tests/svelte.rs. This will ensure next improvements won't break the svelte implementation

Thanks for it

[Valerioageno]

Thanks for the addition. Please fix the Rustfmt pipeline so we can merge it into main.

[Valerioageno]

LGTM