Add CPU by-divisor tester and integrate interface

PerfectNumbers.Core/IMersenneNumberDivisorByDivisorTester.cs

@@ -0,0 +1,26 @@
+using System;
+
+namespace PerfectNumbers.Core;
+
+public interface IMersenneNumberDivisorByDivisorTester
+{
+        bool UseDivisorCycles { get; set; }
+
+        int BatchSize { get; set; }
+
+        void ConfigureFromMaxPrime(ulong maxPrime);
+
+        ulong DivisorLimit { get; }
+
+        ulong GetAllowedMaxDivisor(ulong prime);
+
+        bool IsPrime(ulong prime, out bool divisorsExhausted);
+
+        IDivisorScanSession CreateDivisorSession();
+
+        public interface IDivisorScanSession : IDisposable
+        {
+                void CheckDivisor(ulong divisor, ulong divisorCycle, ReadOnlySpan<ulong> primes, Span<byte> hits);
+        }
+}
+