parse sproto file .sproto to binary file .spb or c# code .cs.
usage is as follows:
usage: lua sprotodump.lua [[<out_option> <out>] ...] <option> <sproto_file ...>
out_option:
-d dump to speciffic dircetory
-o dump to speciffic file
-p set package name(only cSharp code use)
option:
-cs dump to cSharp code file
-spb dump to binary spb file