Lua functions to handle make command output for specific FreeBSD ports targets

[tuukka.pasanen_ilmi.fi]

Summary

Diff adds Lua functions designed to process and manage the output of the make command within FreeBSD ports, with a focus on handling output from specific targets.

Test Plan

After patch is applied then it can be tested with Lua script which under this, go to some ports package and run with command LUA_PATH="/usr/ports/Mk/LuaScripts/?.lua;;" /usr/libexec/flua /usr/ports/Mk/LuaScripts/example.lua:

Testing script (example.lua):

local Logging = require("logging")
logger = Logging.new(nil, "DEBUG", true)
require("ports-make")

output = ports_make_target("describe")

print(output)

output_table = ports_make_target_as_table("describe-json")

for _, cur_string in ipairs(output_table) do
        print("Output line: [" .. cur_string .. "]")
end