feat: Add CutList.Mcp project for MCP server integration

Add new MCP (Model Context Protocol) server project that exposes cut
list optimization tools for AI assistants. Implements tools for:
- create_cutlist: Optimized bin packing with parts and stock bins
- parse_length: Parse architectural format to decimal inches
- format_length: Format inches to feet/inches/fractions
- create_cutlist_report: Generate formatted printable text report

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CutList.Mcp/CutList.Mcp.csproj

@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <ItemGroup>
+    <ProjectReference Include="..\CutList.Core\CutList.Core.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="10.0.2" />
+    <PackageReference Include="ModelContextProtocol" Version="0.7.0-preview.1" />
+  </ItemGroup>
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>