Rust trial: port interface to Sycamore

Now we have a reactive web app written entirely in Rust. The Trunk build
tool compiles it to WebAssembly and generates a little JavaScript glue.

lang-trials/rust/Cargo.toml

@@ -1,19 +1,15 @@
 [package]
-name = "engine"
+name = "sycamore-trial"
 version = "0.1.0"
 authors = ["Aaron"]
 edition = "2021"
 
-[lib]
-crate-type = ["cdylib", "rlib"]
-
 [features]
 default = ["console_error_panic_hook"]
 
 [dependencies]
 nalgebra = "0.33.0"
-js-sys = "0.3.69"
-wasm-bindgen = "0.2.84"
+sycamore = "0.9.0-beta.2"
 
 # The `console_error_panic_hook` crate provides better debugging of panics by
 # logging them with `console.error`. This is great for development, but requires
@@ -21,6 +17,13 @@ wasm-bindgen = "0.2.84"
 # code size when deploying.
 console_error_panic_hook = { version = "0.1.7", optional = true }
 
+[dependencies.web-sys]
+version = "0.3.69"
+features = [
+  'CanvasRenderingContext2d',
+  'HtmlCanvasElement',
+]
+
 [dev-dependencies]
 wasm-bindgen-test = "0.3.34"