PremiumRank System

[Ziex]

* PremiumRank System for TrinityCore 3.3.5a (WotLK) Beta Test !!
 * ============================================================

 * Optimizations & Fixes:

 * 1. Uses Read-Write lock performance (High concurrency).

 * 2. Deadlock prevention: Removes heavy logic (ApplyBenefits, Chat) from locks.

 * 3. Database Safety: Verifies DB write immediately after saving.

 * 4. Item Safety: Item is consumed ONLY after successful DB commit.

 * 5. Cache Consistency: Strict synchronization between FastCache and MainCache.

 * ============================================================

[Ziex]

Update Trial for 1.5H test