Added device identifier, APIs for updating token by identifier, Device creation/update upon signin.

src/Core/Repositories/IDeviceRepository.cs

@@ -8,6 +8,7 @@ namespace Bit.Core.Repositories
     public interface IDeviceRepository : IRepository<Device, Guid>
     {
         Task<Device> GetByIdAsync(Guid id, Guid userId);
+        Task<Device> GetByIdentifierAsync(string identifier, Guid userId);
         Task<ICollection<Device>> GetManyByUserIdAsync(Guid userId);
     }
 }

src/Core/Repositories/SqlServer/DeviceRepository.cs

@@ -30,6 +30,23 @@ namespace Bit.Core.Repositories.SqlServer
             return device;
         }
 
+        public async Task<Device> GetByIdentifierAsync(string identifier, Guid userId)
+        {
+            using(var connection = new SqlConnection(ConnectionString))
+            {
+                var results = await connection.QueryAsync<Device>(
+                    $"[{Schema}].[{Table}_ReadByIdentifierUserId]",
+                    new
+                    {
+                        UserId = userId,
+                        Identifier = identifier
+                    },
+                    commandType: CommandType.StoredProcedure);
+
+                return results.FirstOrDefault();
+            }
+        }
+
         public async Task<ICollection<Device>> GetManyByUserIdAsync(Guid userId)
         {
             using(var connection = new SqlConnection(ConnectionString))