Allow autoswapping of filters when certain events are hit

[Critical-Impact]

I'm thinking it might be useful to swap filters automatically when certain things happen, such as

1. Swapping classes(crafting, gathering, etc)
2. Accessing vendors or talking to other specific NPCs

[chalkos]

Maybe this could be done in a way that also handles #22 somehow. Like limiting the retainers filter to only when targetting the Summoning Bell, or highlighting cheap vendor items when talking to a vendor. number 2 on your list could handle those

[mishugashu]

I am new to this, so maybe it can be done, but I want specific item types to go to specific retainers. So, I was writing a sort filter for each retainer. Unfortunately, there can only be 1 active filter, which means I need to manually change filters between going to each retainer, which is a drag. So, this would be great if one of the events is talking to a specific retainer!