feat: add express & handlebars

.gitignore

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+/node_modules
+.DS_Store

.vscode/settings.json

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+{
+  "cSpell.words": [
+    "exphbs"
+  ]
+}

app.js

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+const express = require('express')
+const app = express()
+
+const exphbs = require('express-handlebars')
+
+const port = 3000
+
+app.engine('handlebars', exphbs({ defaultLayout: 'main' }))
+app.set('view engine', 'handlebars')
+
+app.get('/', (req, res) => {
+  res.render('index')
+})
+
+app.listen(port, () => {
+  console.log(`express is running on http://localhost:${port}`)
+})