Add empty test level and Unreal MCP tooling

- L_TestFlight: empty, zero-gravity level for Phase 0 flight testing,
  set as editor/game default map.
- Enable UnrealMCPython + Python Editor Script Plugin, third-party
  MCP plugin (GenOrca/unreal-mcp v2.2.0) giving direct editor control
  (actors, blueprints, levels, materials, etc.) alongside Epic's
  built-in Unreal MCP plugin.
- Vendor the mcp-server Python source used to bridge to the plugin.
- .mcp.json intentionally gitignored (machine-specific absolute paths).

mcp-server/setup.py

@@ -0,0 +1,21 @@
+from setuptools import setup, find_packages
+
+setup(
+    name="unreal-mcp",
+    version="1.0.0",
+    description="MCP Server for Unreal Engine integration",
+    author="Your Name",
+    author_email="your.email@example.com",
+    packages=find_packages(where="src"),
+    package_dir={"": "src"},
+    python_requires=">=3.8",
+    install_requires=[
+        "fastmcp>=1.0.0",
+    ],
+    entry_points={
+        "console_scripts": [
+            "unreal-mcp=unreal_mcp.server:run_server",
+            "unreal-mcp-test=main:test_server"
+        ],
+    },
+)