Fix broken stock bridge promises and packaging logic

[dudebehinddude]

I have been using this mod in a server I am running, but I ran into some issues that made it basically impossible for me to actually use it as intended in my base, so I decided to fix them and open a PR. Mainly, this should address:

• When items are inserted to AE they don't update logistic promises (this caused me so much pain until I figured out that it just wasn't implemented for some reason 😭)
• Multi-package requests not able to be combined in a re-packager in some cases (mainly when combining with requests outside of AE2)
• The packager only sending out one type of item at a time (now it will do as much as it can fit in one package)

I have my formatter setup to run on save and some of the code changes are probably slightly poorly thought out (mainly dealing with package combining), so if you want to close this and copy some of the code changes yourself or modify this PR I don't mind (I just wanted this to be fixed on my server, and I thought I would contribute the changes in case they're useful).

Fixes #14
Fixes #18
Fixes #22