fix: correct CPU throttle param and enforce server delete safety delay

- servers_throttle_cpu: send `percent` instead of `cpuThrottle` in
  request body to match VirtFusion API spec
- servers_delete: enforce minimum 300s (5 min) delay on all deletions
  as a safety margin to prevent accidental destruction
- Bump version to 1.0.1

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@ezscale/virtfusion-mcp",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Model Context Protocol (MCP) server for the VirtFusion virtualization control panel API",
   "type": "module",
   "main": "dist/index.js",