docs: add MCP client integration documentation and scripts

- Update README with integration instructions for Cursor, Claude Desktop, and Cline
- Add configuration examples for different MCP client integrations
- Create Windows CMD script for starting MCP server
- Include configuration files for Claude Desktop and Cline clients

docs/claude_desktop_config.json

@@ -0,0 +1,16 @@
+{
+    "mcpServers": {
+        "homeassistant-mcp": {
+            "command": "bun",
+            "args": [
+                "run",
+                "start",
+                "--port",
+                "8080"
+            ],
+            "env": {
+                "NODE_ENV": "production"
+            }
+        }
+    }
+}