Changed domains, configured links between VisaApplication and Applicant,created generic repository and repositories for domains

SchengenVisaApi/Infrastructure/Database/VisaApplications/Configuration/PastVisaConfiguration.cs

@@ -0,0 +1,16 @@
+using Domains.VisaApplicationDomain;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace Infrastructure.Database.VisaApplications.Configuration
+{
+    public class PastVisaConfiguration : IEntityTypeConfiguration<PastVisa>
+    {
+        public void Configure(EntityTypeBuilder<PastVisa> entity)
+        {
+            entity.Property(p => p.Name)
+                .IsUnicode(false)
+                .HasMaxLength(70);
+        }
+    }
+}