Interfaces woohoo

LctMonolith/Services/Contracts/IRuleValidationService.cs

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+using LctMonolith.Models.Database;
+
+namespace LctMonolith.Services.Interfaces;
+
+public interface IRuleValidationService
+{
+    Task<bool> ValidateMissionRankRulesAsync(Guid missionId, Guid playerId);
+    Task<bool> ValidateRankAdvancementRulesAsync(Guid playerId, Guid targetRankId);
+    Task<IEnumerable<MissionRankRule>> GetApplicableRankRulesAsync(Guid missionId);
+}