Major refactor

MathEngine/MathRunner/MathRunner.csproj

@@ -0,0 +1,21 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\MathEngine\MathEngine.csproj" />
+  </ItemGroup>
+
+</Project>

MathEngine/MathRunner/Program.cs

@@ -0,0 +1,15 @@
+using MathEngine.Expression;
+
+namespace MathRunner
+{
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine("Evaluting expression...");
+            Expression exp = new("54+2+1");
+            Console.WriteLine(exp.Evaluate());
+            Console.WriteLine("Hello, World!");
+        }
+    }
+}