bug fixes for auto-rescan etc.

BIG update. Total restructure into modules.
Support writing config to CustomData (save command)
load command to reload from customdata after user editing
attempt to avoid changing gyro sliders unless the change is important enough
obtains actual player inputs for yaw! No more fighting the overrides.
major bugfixes
minor bugfixes
cleaning
dusting
spritzing

Doesn't seem to restart after a paste, but hey at least it doesn't crash in the diagnostics!

Hotfix for beta update removal of WritePrivateText

Support for Digi's Loop Computers mod. Cleaned up override behavior. Made limits more flexible. Redid entire main function, all the argument handling, all the save/load, all the survival of reloading world behavior. Much cleaner, works again now! Mostly this is porting all the good limits and cleanup stuff over from Altitude script.

WOOPS I've gone and done it. Grew tired of maintaining two separate codebases, this and the altitude script had deviated so much, that I'd made so much headway with the altitude script lately with the PID support and everything. The altitude script was a newer branch of this script anyway, so long story short, I went ahead and ported over the remaining features the altitude script had long been lacking over to it just prior, then I went through and stripped out all of the parts that were thruster or altitude-related and put it back into this script. So this script is now finally all cleaned up but it's really just a stripped down light-weight version of the altitude script, lacking thruster support. BONUS: now it has a full PID controller on pitch and yaw! And it can have the gyros and other stuff attached to whatever grid you want so long as it's not static. Display auto-detects fontsize for scaling width. Tons other good stuff. Trust me, this is for your own good! Well, for my own good, anyway.

Major update uses TryGetGravityVector instead of calculating planet center manually :)
Also cleaned up obtaining block group. Group name default changed to "Aligner" to ease compatibility with my other script/drop-in-replacement now. Timer block is allowed to be on a separate grid. Can use regular Cockpit instead of Remote Control now. Enjoy!

Fixed broken script caused by reckless devs.

How I went this many days without noticing you can't have multiple ships running this script docked at the same station without interfering with each other, I have no idea! FIXED

minor optimization to number culture formatting setup to avoid a few per-frame per-number string operations, cache at startup