Async Locator Refined

This version brings overall improvements to the mod.

Fixes:

• ExplorationMapFunction.run performed the search before calling MapItem.create, meaning the original mixin never prevented the blocking operation from running on the main thread and instead started a redundant asynchronous search afterwards. The injection has now been moved to run before ServerLevel#findNearestMapStructure, cancelling the synchronous search entirely so exploration maps are now located asynchronously. This was a critical issue since first version of AsyncLocator-Refined.
• Fixed thread safety races in structure lookups that could corrupt state or crash when locating off-thread.
• Fixed a race where locate callbacks could run before the map item was placed, producing broken maps in chests and villager trades.
• Eyes of Ender are now refunded if the stronghold search fails, times out (60s), or errors, like vanilla.
• Dolphins no longer lose their treasure target when their search goal restarts, and handle failed searches like vanilla.
• Villager trade offers now refresh correctly for the trading player once a map search completes.
• /locate errors are now reported to the command sender instead of being swallowed, while preserving the client's language.

Added:

• Expanded the public API for other mods, adding configurable locate timeouts and support for biome searches using custom biome predicates.
• Identical concurrent locate requests (same dimension, target, position, radius) now share one search instead of running duplicates.
• Game tests for both Fabric and NeoForge, run automatically on pull requests.
• Sources jars are now published for mod developers.
• Added configurable limits for concurrent and queued locate searches, preventing unbounded locate work during request bursts. The default allows 2 active searches and 128 queued searches.