Improved compatibility with "Sanity - Sector Miner"

[Vectorial1024]

Their Steam Workshop page is here: https://steamcommunity.com/workshop/filedetails/?id=2098605344

Their modification of the Sector AutoMine script is impossible to detect when orders are synced. This means that:

• the extra sell range parameter cannot be copied over; or
• order sync fails because I expected the user to be using the SSM mod but that the user is not using it, and so the extra sell range parameter cannot be found (this is an error)

This can be fixed by simply having a global variable in the Sanity - Sector Miner mod. In case where I could not come back to here, tell the makers of SSM to have a look at /md/c1024_civfleet_signals, where several global variables are set whenever a new game is loaded or started.

[Vectorial1024]

This will very likely involve me rewriting the mining order sync code.