Added a PoC script which implements a commandline

client/scripts/cmdline.lua

@@ -0,0 +1,12 @@
+print("This is how a cmd-line interface could be implemented\nPrint 'exit' to exit.\n")
+local answer
+repeat
+  	io.write("$>")
+  	io.flush()
+  	answer=io.read()
+  	if answer ~= 'exit' then
+  		local func = assert(loadstring("return " .. answer))
+  		io.write("\n"..tostring(func() or "").."\n");
+  	end--]]
+until answer=="exit" 
+print("Bye\n");