First example of a wasm plugin with wasmer

crates/example-plugin/Cargo.toml

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+[package]
+name = "example-plugin"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+
+
+[lib]
+crate-type = ["cdylib"]

crates/example-plugin/src/lib.rs

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+#[no_mangle]
+pub fn add(one: i32, two: i32) -> i32 {
+    one + two
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}