CREST fittings read/write

[Artefact2]

https://developers.eveonline.com/blog/article/read-write-of-saved-fits-now-on-sisi

[Artefact2]

Stage 1:

• Simple import/export of loadouts from CREST. Can use description to embed gzCLF.

Stage 2:

• A "Track/Untrack" option that auto-updates the fitting every time it gets updated in Osmium.