取消方块更新 (Cancel Block Update)

# New
- new game rule: `cancelblockupdate:replace`: when false, grass cannot be replaced; default false.
# Fix
- Values of game rules isn't correctly initialized when player joins server.

# Fix
- Crash on launching at MC 1.19.X.

# New
- Commands:
- `/cancelblockupdate random <pos>` Trigger the random tick at the target block pos once.
- `/cancelblockupdate schedule <pos>` Trigger the schedule tick at the target block pos once.
# Change
- Change the license from MIT to MPL.
# Fix
- Setting gamerule `cancelblockupdate:off` to `true` has no effect on world generation.

# Change
Change the mod icon.