Set custom starting point for mining towers

Hello!
Currently mining is started from the mining towers, which a lot of times makes it clunky to prioritize certain parts of the mining field. If mining towers could have an "origo" set from where to start mining (the same exists now, it's the tower itself), we wouldn't have to build new towers to prioritize mining locations. Simple and effective. Copy pasting mining towers is clunky as well as the area is always reset.