Add telephone numbers

Elwig/Models/MemberTelNr.cs

@@ -0,0 +1,25 @@
+using Microsoft.EntityFrameworkCore;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Elwig.Models {
+    [Table("member_telephone_number"), PrimaryKey("MgNr", "Nr")]
+    public class MemberTelNr {
+        [Column("mgnr")]
+        public int MgNr { get; set; }
+
+        [Column("nr")]
+        public int Nr { get; set; }
+
+        [Column("type")]
+        public string Type { get; set; }
+
+        [Column("number")]
+        public string Number { get; set; }
+
+        [Column("comment")]
+        public string? Comment { get; set; }
+
+        [ForeignKey("MgNr")]
+        public virtual Member Member { get; private set; }
+    }
+}