Additional settings for the jpegoptim binary

Hello all, we were looking patch such functionality and found this issue, so collaborating.

Patch still applies cleanly and looks to work fine. I noticed that the schema file would need to be updated, so doing so in this patch.

A bit of refactoring and renaming things:

1. Removed the strip- prefix from the strip options as its unnecessary (already in the strip option array).
2. Added an all option so this setting is explicit. This allowed for simplifying how we cook the argument later. inside applyToImage().
3. Adjusted the schema file accordingly.

Fixing a mistake, forgot to account for when we build the arguments for the command since I changed the form keys.