feat(event): add FoodLevelChangeEvent

[coolestandie]

Added events

• FoodLevelChangeEvent — called when a player's food level changes, allowing plugins to cancel or modify the resultant food level and inspect the consumed item when available.

Implementation

Dispatched around Bedrock's player eating, exhaustion, cake and Saturation paths. The event is applied before the native hunger transaction, preserving item-backed context and allowing cancellation or mutation to affect the final food level.

Notes

• food_level is writable and clamps values below zero to zero.
• item is an optional copy of the consumed ItemStack; exhaustion and other itemless changes report None.
• The event is exposed through the C++ API, Python bindings and generated stubs.

Testing

Verified with a fresh Windows build, C++ tests, Python unit tests and a live BDS 1.26.45.1 server. Live validation covers cancellation, mutation, item-backed changes, itemless exhaustion changes and removing Saturation during the callback.

C++ tests: 340 passed. Python unit tests: 248 passed, 13 skipped. Live targeted event checks: 5 passed.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 12.06%. Comparing base (46eff9f) to head (73de4f8).

Files with missing lines	Patch %	Lines
...ude/endstone/event/actor/food_level_change_event.h	0.00%	10 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #524      +/-   ##
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- Coverage    12.09%   12.06%   -0.04%     
===========================================
  Files          371      372       +1     
  Lines         9325     9335      +10     
  Branches      3338     3340       +2     
===========================================
- Hits          1128     1126       -2     
- Misses        7529     7539      +10     
- Partials       668      670       +2     

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