Add libraries for EntityFramework

Stats plugin work
Allow plugins to dynamically add EF classes to the context

Plugins/SimpleStats/Models/EFClientKill.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using SharedLibrary.Database.Models;
+using System.ComponentModel.DataAnnotations.Schema;
+using SharedLibrary.Helpers;
+using System.ComponentModel.DataAnnotations;
+
+namespace StatsPlugin.Models
+{
+   public class EFClientKill : SharedEntity
+    {
+        public EFClientKill() { }
+
+        [Key]
+        public long KillId { get; set; }
+        public int VictimId { get; set; }
+        [ForeignKey("VictimId")]
+        public virtual EFClient Victim { get; set; }
+        public int AttackerId { get; set; }
+        [ForeignKey("AttackerId")]
+        public virtual EFClient Attacker { get; set; }
+        public int ServerId { get; set; }
+        [ForeignKey("ServerId")]
+        public virtual EFServer Server { get; set; }
+        public IW4Info.HitLocation HitLoc { get; set; }
+        public IW4Info.MeansOfDeath DeathType { get; set; }
+        public int Damage { get; set; }
+        public IW4Info.WeaponName Weapon { get; set; }
+        public Vector3 KillOrigin { get; set; }
+        public Vector3 DeathOrigin { get; set; }
+        // http://wiki.modsrepository.com/index.php?title=Call_of_Duty_5:_Gameplay_standards for conversion to meters
+        [NotMapped]
+        public double Distance => Vector3.Distance(KillOrigin, DeathOrigin) * 0.0254;
+        public IW4Info.MapName Map { get; set; }
+    }
+}

Plugins/SimpleStats/Models/EFClientStatistics.cs

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+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using SharedLibrary.Database.Models;
+
+namespace StatsPlugin.Models
+{
+    public class EFClientStatistics : SharedEntity
+    {
+        [Key, Column(Order = 0)]
+        public int ClientId { get; set; }
+        [ForeignKey("ClientId")]
+        public virtual EFClient Client { get; set; }
+        [Key, Column(Order = 1)]
+        public int ServerId { get; set; }
+        [ForeignKey("ServerId")]
+        public virtual EFServer Server { get; set; }
+        [Required]
+        public int Kills { get; set; }
+        [Required]
+        public int Deaths { get; set; }
+        [Required]
+        [NotMapped]
+        public double KDR
+        {
+            get => Deaths == 0 ? 0.0 : Math.Round((float)Kills / (float)Deaths, 2);
+        }
+        [Required]
+        public double SPM { get; set; }
+        [Required]
+        public double Skill { get; set; }
+    }
+}

Plugins/SimpleStats/Models/EFServer.cs

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+
+using SharedLibrary.Database.Models;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace StatsPlugin.Models
+{
+    public class EFServer : SharedEntity
+    {
+        [Key]
+        [DatabaseGenerated(DatabaseGeneratedOption.None)]
+        public int ServerId { get; set; }
+        [Required]
+        public int Port { get; set; }
+    }
+}