Lucky Block Cobblemon

# 150K Celebration Update
### Thank you for 150k downloads!

## Added
- Special limited-time celebration event
- Legendary spawn config support for regular Lucky Blocks
- New server config options for crafting and natural generation
## Changed
- Improved config layout
- Improved temporary event handling
- Improved special structure behavior
## Fixed
- Fixed event-specific shiny chance on regular Lucky Block spawns
- Fixed date-based event filtering
- Fixed config-related usability issues
## Notes
- Temporary event content expires automatically
- /luckblock reload may be required after config changes
- Worldgen changes only affect new chunks