Implement cqueues server backend

[leafo]

cqueues is an event loop and lua-http is a http client and server library. It was chosen because it provides many of the same benefites of OpenResty, all blocking io is async by default, handled transparently by coroutines.

• [x] start a server from lapis server
• [x] postgres database connection
• [ ] mysql database connection
• [ ] database connection pool, connection per request (this may be impossible)
• [x] dispatch requests from lua-http to lapis application
• [x] configuration option to specify server
• [x] queues as an attached server for testing
• [ ] headers, GET, POST, form encoded data, file upload should be available in request
• [ ] security audit to ensure unbounded data does not disable server
• [ ] writing logs to file
• [ ] write new documentation page, update existing pages
• [ ] simple way to serve static files

[lePereT]

Hi Leafo! This seemed like a good place to reply and ask how this integration is going and whether the above checklist is still accurate? What's your overall thoughts on using cqueues+lua-http + lapis on a long term embedded hardware project (www.janga.la)?