Update inara plugin to use incremental shiplocker updates when sending info (and send backpack, if possible on INARAs side)

Currently we:
~~1. Only send ship locker info, backpacks arent included~~
2. Only send FULL ship locker info, transfers are not included

~~For 1, we're waiting on a response from artie about if we should, if so...~~
~~1. We need to track what we've sent to artie and remove stuff from the backpack if the player dies (or assume the next ShipLocker will get it~~
~~2. implement additional backpack endpoints if those become a thing~~

Update from artie, dont do this until some time in the future if backpack specific support is added

for 2, if transfers are working correctly we should send them to incrementally update inara

Start by locating the Inara plugin and its current ship-locker submission path, then trace how transfers are represented and sent. Done means transfers are sent to Inara as incremental updates when working correctly; backpack support remains deferred until Inara adds specific support.

Written by the indexing model from the issue text.