Proof of concept for Lua scripts support

[joseluisq]

Description

This is just a proof of concept for supporting Lua scripts in SWS (eventually at some point) embedding the runtime.
It serves as an excuse to have a closer look at the details and possibilities of embedding Lua as well as its costs.

It works via an advanced configuration.

#....

### Scripts
[[advanced.scripts]]
# 1 MB
memory-limit = 1
# Lua opt-in stdlib modules
std = [ "io", "os", "pkg", "debug", "coroutine" ]
# Route
source = "/dynamic/**"
# Script path
destination = "tests/scripts/dynamic.lua"

There are some ideas to be refined in order to improve this work in progress, so will be shared here.
In case the evaluation is successful (most likely) then we can decide to include it under an experimental flag.

Any ideas are welcome.

Related Issue

Motivation and Context

My interest in Lua as a scripting utility for SWS and the discussion #253.

How Has This Been Tested?

Screenshots (if appropriate):