refactor: share the default tool services between surfaces

Move the composition of the default tool services from the Node MCP
server into gods-eye-view/tools/services, a portable export. Given a
fetch that resolves the sources' /api paths, it builds the same services
in a browser as on the local MCP server, so other surfaces can compose
the same catalog. Queries still read only their services.

package.json

@@ -253,6 +253,7 @@
     "./sources/transit-service": "./src/sources/transitService.js",
     "./sources/map-features": "./src/sources/overpassFeatures.js",
     "./tools": "./src/tools/index.js",
-    "./tools/mcp": "./src/tools/mcp/index.js"
+    "./tools/mcp": "./src/tools/mcp/index.js",
+    "./tools/services": "./src/tools/services.js"
   }
 }