(Mighty) Lua Event Manager 12/13/2024

Moved lem/settings.lua to lem/settings.default.lua so that updates don't overwrite modified settings. lem/settings.default.lua includes sample events and categories, just rename it to use them.

- Added Categories for grouping events
- Categories can be created in the Categories section and then assigned when adding/editing events
- Display message when event code fails to load
- Checkbox for enable/disable now displayed in events table
- Added filtering to events list
- Only save character specific settings when enabling/disabling an event, instead of all settings
- Save event now checks for what changed before deciding whether to save full settings

- Fix event viewer crashing when event code includes formatted strings
- Add a couple more realistic sample events (aten silence run away, shei root for clr/shm)

Didn't get a chance to try the aten/shei mission events yet but just copied them from the individual lua scripts i'd been using. They may need updating a bit to match the format better before they work.

Changing events to be indexed by name instead of as an array so that it can avoid looping through all events instead of just enabled events.
If anyone happened to get started with this in the last few hours since it was posted, its a breaking change to what's stored in settings.lua.