Create tool for fixing 1.0 save files

[BC46]

Players who started a vanilla playthrough on FL 1.0 and continue with the HDE edition are likely to run into an issue where they can't progress to the next level. This is caused by an internal mission number change in the official 1.1 patch, so this is something we can't change. https://the-starport.net/freelancer/forum/viewtopic.php?post_id=20878#forumpost20878

What we can do is create a tool that players can use to fix their save file. It should be a simple Windows forms application where a player can select their save file, and the program will output a fixed version with the click of a button. Using FlCodec for this is strongly recommended http://adoxa.altervista.org/freelancer/tools.html#flcodec . Would need to ask adoxa for permission