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/Program.cs

@@ -0,0 +1,13 @@
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using ModelContextProtocol.Server;
+
+var builder = Host.CreateApplicationBuilder(args);
+
+builder.Services
+    .AddMcpServer()
+    .WithStdioServerTransport()
+    .WithToolsFromAssembly(typeof(Program).Assembly);
+
+var app = builder.Build();
+await app.RunAsync();