Models: Add Entities/ folder

Elwig/Models/Entities/Currency.cs

@@ -0,0 +1,23 @@
+using Elwig.Helpers;
+using Microsoft.EntityFrameworkCore;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Elwig.Models.Entities {
+    [Table("currency"), PrimaryKey("Code")]
+    public class Currency {
+        [Column("code")]
+        public string Code { get; private set; }
+
+        [Column("name")]
+        public string Name { get; private set; }
+
+        [Column("symbol")]
+        public string? Symbol { get; private set; }
+
+        [Column("one_euro")]
+        public long? OneEuroValue { get; private set; }
+
+        [NotMapped]
+        public decimal? OneEuro => OneEuroValue != null ? Utils.DecFromDb(OneEuroValue.Value, 6) : null;
+    }
+}