[FEAT] Support `query parser` application setting

[asos-craigmorten]

Issue

Setup:

This issue is to support the query parser (and query parser fn) application setting, allowing users to support custom querystring parsers in Opine.

Details

See:

• https://expressjs.com/en/api.html#app.settings.table
• https://github.com/expressjs/express/blob/master/lib/application.js#L77
• https://github.com/expressjs/express/blob/master/lib/application.js#L144
• https://github.com/expressjs/express/blob/master/lib/application.js#L368
• https://github.com/expressjs/express/blob/master/lib/middleware/query.js#L29

There isn't currently a qs library Deno equivalent, but we can look to implement the application setting allowing us to pass a custom parser function as well as investigating PIKA/SkyPack/JSPM to see if using qs is an option.