'Hello World' plugin example

.gitignore

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+/target

Cargo.toml

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+[package]
+name = "app"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+extism = "1.0.0"

src/main.rs

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+use extism::*;
+
+fn main() {
+    let url =
+        Wasm::url("https://github.com/extism/plugins/releases/latest/download/count_vowels.wasm");
+    let manifest = Manifest::new([url]);
+    let mut plugin = Plugin::new(&manifest, [], true).unwrap();
+
+    let res = plugin
+        .call::<&str, &str>("count_vowels", "Hello, world!")
+        .unwrap();
+    println!("{}", res);
+}
+