Noob's Container Searcher

## Added
- 26.2 support.
- Villager items support.

## Fixed

- Fixed container and villager records deleting themselves over time. Cleanup now waits 15 seconds after joining a world or changing dimension, only verifies records near the player (48 blocks for containers, 32 for villagers), and requires several consecutive confirmations before removing a record.
- Fixed containers behind item frames not being detected when opened through entity interaction.
- Fixed obstructed chests being ignored by container detection.
- Fixed silent data loss when the saved container data file was corrupted; it is now backed up instead of being overwritten.

## Changed

- Gui design.
- Reduced disk writes by batching villager position updates instead of saving every second.
- Added safeguards so an opened menu can no longer be attributed to the wrong container.