Peterwolfs realistic tree felling

[1.1.8+1.20.1] - 2026-11-04

• Added /treefelling off (and /timber off) command to immediately toggle realistic tree felling off and switch to vanilla tree behavior (individual log block breaking without felling).
• Added /treefelling on (and /timber on) command to re-enable realistic tree felling.
• Added /treefelling status (and /timber status, or running without arguments) to check whether realistic felling or vanilla behavior is currently active.
• Toggling the felling mode automatically saves and persists the setting to configuration file (peterwolfs-realistic-tree-felling.json).
• Disabled undercut notch rendering while chopping when realistic felling is turned off.