Add delaunay library

[Yonaba]

delaunay is a module for polygon triangulation.
Maybe it would be a good addition to LuaForWindows.

[rjpcomputing]

Please make a pull request with these additions?

You just place the modules files:

• Documentation: files/docs/<modulename>/...
• Binary module: files/clibs
• Lua modules: files/lua
• Examples: files/examples/<modulename>/...
• [Optional] Tools: files/utils/<modulename>