ifcquery, ifcedit, ifcmcp: add documentation

Add ifcquery, ifcedit and ifcmcp to the README contents table, the
Sphinx docs toctree and introduction utilities table. Add new .rst
pages for each package documenting subcommands, installation, usage,
and parameter types. Fix plot and render CLI examples in ifcquery
README to use -o/--out-format flags. Update ifcmcp README to use the
installed ifcmcp command rather than python3 -m ifcmcp.

Generated with the assistance of an AI coding tool.

src/ifcmcp/README.md

@@ -16,7 +16,7 @@ Requires `ifcopenshell`, `ifcquery`, and `ifcedit`. The `mcp` package is an opti
 ## Running the server
 
 ```bash
-python3 -m ifcmcp
+ifcmcp
 ```
 
 This starts the server on stdio transport, suitable for use with Claude Code
@@ -27,7 +27,7 @@ or any MCP client.
 Use the `claude mcp add` command:
 
 ```bash
-claude mcp add --transport stdio ifc -- python3 -m ifcmcp
+claude mcp add --transport stdio ifc -- ifcmcp
 ```
 
 Or create a `.mcp.json` file in your project root:
@@ -37,8 +37,7 @@ Or create a `.mcp.json` file in your project root:
   "mcpServers": {
     "ifc": {
       "type": "stdio",
-      "command": "python3",
-      "args": ["-m", "ifcmcp"]
+      "command": "ifcmcp"
     }
   }
 }