Print lua version + implementation on startup

[lionkor]

When running a server and writing plugins for it, I want to know which lua version is used. On linux I can ldd, but on Windows I'm lost. The server should print the lua version and any other info it has about it, on startup of the LuaEngine.

[lionkor]

This also needs to be added to the version command, just like all other library versions we can reasonably query and care about (like openssl)

[sla-ppy]

@lionkor Please assign me to this. I'll tackle this issue!

[sla-ppy]

@lionkor Suggested for us to add a way to tell which platform we are on along with the rest of the version information.
This will be also added in this issue.