feat(node): add templates for nodejs frameworks

Now that the ground work has been set for one framework. This PR adds template support for the
remaining frameworks

packages/node/src/generators/application/files/connect/main.ts__tmpl__

@@ -0,0 +1,11 @@
+import connect from 'connect';
+
+const app = connect();
+
+app.use((req, res) => {
+    res.end('Hello from Nrwl API!');
+});
+
+app.listen(<%= port %>, () => {
+    // Server is running
+})

packages/node/src/generators/application/files/fastify/main.ts__tmpl__

@@ -0,0 +1,18 @@
+import fastify from 'fastify';
+
+const app = fastify();
+
+app.get('/', async (req, res) => {
+    return 'Hello from Nrwl API!'
+});
+
+const start = async() => {
+    try {
+        await app.listen({ port: <%= port %> })
+    } catch (err) {
+        // Errors are logged here
+        process.exit(1);
+    }
+}
+
+start();

packages/node/src/generators/application/files/koa/main.ts__tmpl__

@@ -0,0 +1,11 @@
+import koa from 'koa';
+
+const app = new koa();
+
+app.use(async ctx =>{
+    ctx.body = 'Hello from Nrwl 🐳 API';
+});
+
+app.listen(<%= port %>, () => {
+    // Server is running
+});