Add rockspec

[leso-kn]

Hi :) This PR adds a package definition for LuaRocks and adds compatibility for Python 3.11+.

I took the liberty to prepare a demo rock under https://luarocks.org/modules/leso-kn/lunatic-python, so you can try out the PR from my unmerged feature branch using:

> luarocks install lunatic-python

Python can then be used from inside Lua, e.g.:

-- test.lua
local py = require 'python'
py.execute 'print("Hello from Python inside Lua!")'

In case you prefer to not include this or when it gets merged, I'll of course delete my version on luarocks.org so you can upload under the package name 'lunatic-python'.

Thanks for keeping this project up!

[leso-kn]

Small edit: I've corrected the license field in the rockspec to LGPL-2.1, had put MIT out of habit accidentally.

[bastibe]

Thank you for your contribution. Is this PR ready to merge? I'm sorry to say, I don't have the time to review it myself.

[leso-kn]

@bastibe Hey there :) I had to check again myself – yes, it is!

After merging, you can easily upload the package to luarocks.org by running:

> luarocks upload lunatic-python-scm-0.rockspec

Before you do, please ping me, so I can delete the demo rock [1] to free the name "lunatic-python"

[leso-kn]

After merging I also suggest to create a git tag (e.g. 1.0.0), so you can upload a non-scm version to luarocks:

> luarocks new_version --dir rockspecs lunatic-python-scm-0.rockspec 1.0.0
> luarocks upload rockspecs/lunatic-python-1.0.0-1.rockspec

This will allow to install the rock directly via luarocks install lunatic-python

If you need assistance with any of that, feel free to ping me :)

[leso-kn]

Info: Today I noticed a regression in the luarocks-Makefile regarding the Lua include path when building on Debian.

The regression is fixed with fe38122