Add cargo lambda example

Author: timClicks

examples/axum-on-aws-lambda/.gitignore

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+Cargo.lock
+/target

examples/axum-on-aws-lambda/Cargo.toml

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+[package]
+name = "axum-on-aws-lambda"
+version = "0.1.0"
+edition = "2021"
+
+# Starting in Rust 1.62 you can use `cargo add` to add dependencies 
+# to your project.
+#
+# If you're using an older Rust version,
+# download cargo-edit(https://github.com/killercup/cargo-edit#installation) 
+# to install the `add` subcommand.
+#
+# Running `cargo add DEPENDENCY_NAME` will
+# add the latest version of a dependency to the list,
+# and it will keep the alphabetic ordering for you.
+
+[dependencies]
+lambda_http = "0.7"
+lambda_runtime = "0.7"
+tokio = { version = "1", features = ["macros"] }
+axum = "0.6"
+serde_json = "1"
+#tracing = { version = "0.1", features = ["log"] }
+#tracing-subscriber = { version = "0.3", default-features = false, features = ["fmt"] }
+

examples/axum-on-aws-lambda/src/main.rs

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+use lambda_http::{Error, run};
+use axum::{extract::Path, response::Json, routing::{get, post}, Router};
+use serde_json::{Value, json};
+
+async fn index() -> Json<Value> {
+    Json(json!({ "msg": "Hello, Sydney!" }))
+}
+
+async fn greet(Path(name): Path<String>) -> Json<Value> {
+    Json(json!({ "msg": format!("Hello, {name}!") }))
+}
+
+
+#[tokio::main]
+async fn main() -> Result<(), Error> {
+    let app = Router::new()
+        .route("/", get(index))
+        .route("/:name", post(greet));
+
+    run(app).await
+}