Support for subgrids

[Amzd]

This adds support for subgrids like mentioned in #7

I only tested this on one ship, maybe @mkaito can test this on his setup.

I also had to change this in Program.cs:1539 to make the script run at all

-Runtime.UpdateFrequency |= UpdateFrequency.Update1;
+Runtime.UpdateFrequency = UpdateFrequency.None;

but since I'm not really sure how the | operator works I did not include that in this PR.