lua:penlight: Add new package

Pure lua package, the "batteries" for lua, similar to python.

Signed-off-by: Karl Palsson <karlp@remake.is>
lua-mosquitto: Import package and update

Imported from:
https://github.com/flukso/flm02/tree/develop/openwrt/package/lua-mosquitto

Added: license details
Added: Latest upstream code
Removed: test code no longer installed.