Add deno-oak starter (#214)

examples/deno-oak/.gitignore

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+.env
+.vscode/
+coverage/
+cov/
+lcov/

examples/deno-oak/Dockerfile

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+FROM denoland/deno:1.15.3
+
+WORKDIR /app
+
+USER deno
+
+# Cache deps first
+ADD deps.ts .
+RUN deno cache deps.ts
+
+# These steps will be re-run upon each file change in your working directory:
+ADD . .
+RUN deno cache src/index.ts
+
+CMD deno run --allow-net --allow-env src/index.ts

examples/deno-oak/README.md

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+---
+title: Deno with Oak
+description: An example webserver using Oak
+tags:
+  - typescript
+---
+
+# Deno Oak Example
+
+This example is a small [Deno](https://deno.land/) webserver using [Oak](https://github.com/oakserver/oak) for routing.
+
+[![Deploy on Railway](https://railway.app/button.svg)](https%3A%2F%2Frailway.app%2Fnew%3Ftemplate%3Dhttps%3A%2F%2Fgithub.com%2Frailwayapp%2Fexamples%2Ftree%2Fmaster%2Fexamples%2Fdeno-oak)
+
+## ✨ Features
+
+- Deno
+- TypeScript
+- Oak Routing
+## 💁‍♀️ How to use
+
+- [Install Deno](https://deno.land/)
+- Run server `deno run --allow-net --allow-env src/index.ts`
+
+## 📝 Notes
+
+This is an experimental example and should not be used in production.

examples/deno-oak/deps.ts

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+export * from "https://deno.land/x/oak@v9.0.1/mod.ts";

examples/deno-oak/dev_deps.ts

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+export {};

examples/deno-oak/src/index.ts

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+import { Application, Router } from "../deps.ts";
+
+const app = new Application();
+const port = parseInt(Deno.env.get("PORT") ?? "8000");
+
+// Router to serve specific functions on routes
+const router = new Router();
+
+// Route "ping" that responds with "Pong!"
+router.get("/ping", ctx => {
+  ctx.response.body = "Pong!";
+});
+
+// Example of dynamic routes
+router.get("/hello/:name", ctx => {
+  ctx.response.body = `Hello ${ctx.params.name}!`;
+});
+
+// Apply routes
+app.use(router.routes());
+app.use(router.allowedMethods());
+
+// Basic example with a global route
+// Applied last, so the router will take precedence
+app.use(ctx => {
+  ctx.response.body = "Welcome to Railway!";
+});
+
+console.log(`Listening on port ${port}...`);
+await app.listen({ port: port });