gitignore: ignore scripts directory
gitignore: ignore scripts directory

This directory is useful to put scripts for testing during development,
but we will never commit scripts here; any scripts we want to ship in
production will go in src/main/resources of the relevant component.

biovoxxel/imagej,biovoxxel/imagej,TehSAUCE/imagej,biovoxxel/imagej,TehSAUCE/imagej,TehSAUCE/imagej