Create index for sorted activity

[benthecarman]

Now keeps a sorted index of our activity at all time. This should make our activity much faster with only a slight overhead increase.

[benthecarman]

Changed to limit/offset instead of start/until as we talked irl

[TonyGiorgio]

An unknown 0 sat on chain payment appeared during some channel closes.

Multiple force close items are showing up when I only had one.

Further, I cannot test this long enough without getting OOM issues.

[TonyGiorgio]

This lightning payment is showing up between the older on chain force closes that are duplicated

[benthecarman]

Fixed all the duplication errors which also seemed to fixed the crashing for me too, curious if it helps for you as well.

[TonyGiorgio]

What if we did this and defaulted the activity list to the last ~30 items?

My phone is starting to get very slow. And having the new social home screen basically being a "view all" for the transaction list, I would rather it not be that much.

[benthecarman]

Makes sense to me, can rebase

[TonyGiorgio]

Code looks good. If you just want to test it to make sure it works with the new mutiny social PR, that would be great.

[benthecarman]

Found a potential index out of bounds error when testing, fixed it and added tests. Otherwise everything else felt good

[benthecarman]

sorry last push, chatgpt told me another check to add just in case:

// handle start > end
if start > end {
	return vec![];
}