express example programs in Node.js example

[gireeshpunathil]

In Node.js project, we are building a collection of opinionated and real-world examples, more than a simple hello world code. I have proposed an outline for express https://github.com/nodejs/examples/issues/10

• pls review and let me know what do you think
• pls suggest if you have a better idea
• pls let me know if you want to volunteer / contribute

[crandmck]

The PR for the example in the nodejs repo is still open https://github.com/nodejs/examples/pull/21 and there's been no activity for 3+ years. At some point we should consider closing this and reopen or open a new issue when that lands, if ever.