Add a 'sort by found date' option

[Kimi-Arthur]

We can actually log the datetime when the item is first found / crafted.
With this data, we can sort the items by found date. This may be useful in two ways:

1. See recently found items
2. View complete history of Journey

[JavidPack]

This could be doable, I don't want to bloat the save file though, but I do like the idea of sorting by found time.