added reference to Core

added empty implementations of repositories

SurveyLib.Infrastructure.EFCore/Repositories/CompletionRepository.cs

@@ -0,0 +1,37 @@
+using SurveyLib.Core.Models;
+using SurveyLib.Core.Repositories;
+
+namespace SurveyLib.Infrastructure.EFCore.Repositories;
+
+public class CompletionRepository : ICompletionRepository
+{
+    public Task<Completion>? GetByIdAsync(int id)
+    {
+        throw new NotImplementedException();
+    }
+
+    public Task<IEnumerable<Completion>> GetAllAsync()
+    {
+        throw new NotImplementedException();
+    }
+
+    public Task AddAsync(Completion entity)
+    {
+        throw new NotImplementedException();
+    }
+
+    public Task UpdateAsync(Completion entity)
+    {
+        throw new NotImplementedException();
+    }
+
+    public Task DeleteAsync(Completion entity)
+    {
+        throw new NotImplementedException();
+    }
+
+    public Task<IEnumerable<Completion>> GetBySurveyIdAsync(int surveyId)
+    {
+        throw new NotImplementedException();
+    }
+}