Add AoC 2025 project structure and first solutions

AoC_2025.Tests/Day01Test.cs

@@ -0,0 +1,46 @@
+using AdvenOfCode.Contracts;
+
+namespace AoC_2025.Tests;
+
+public class Day01Test
+{
+    private readonly IPuzzleSolver<int> _sut;
+    private const string TestInputPath = @"C:\Users\p01004051\Documents\AoC-PuzzleInputs\2025\Test\day01.txt";
+    private const string ProdInputPath = @"C:\Users\p01004051\Documents\AoC-PuzzleInputs\2025\Prod\day01.txt";
+    
+    public Day01Test()
+    {
+        _sut = new Day01();
+    }
+    [Fact]
+    public void Part01_Test_equals_3()
+    {
+        var actual = _sut.SolvePart1(TestInputPath);
+        
+        Assert.Equal(3, actual);
+    }
+    
+    [Fact]
+    public void Part01_Prod_equals_1097()
+    {
+        var actual = _sut.SolvePart1(ProdInputPath);
+        
+        Assert.Equal(1097, actual);
+    }
+    
+    [Fact]
+    public void Part02_Test_equals_16()
+    {
+        var actual = _sut.SolvePart2(TestInputPath);
+        
+        Assert.Equal(16, actual);
+    }
+    
+    [Fact]
+    public void Part02_Prod_equals_7101()
+    {
+        var actual = _sut.SolvePart2(ProdInputPath);
+        
+        Assert.Equal(7101, actual);
+    }
+}