feat: initial InformatiQ Toolkit plugin

Merges informatiq-wp-secure + informatiq-utils + HoneypotFields into
a single unified plugin with the following improvements:

- Fixed deactivation bug: all protection methods now guard themselves
  with their own option check so toggling off via AJAX takes effect
  immediately without any hook re-registration.
- Added rate-limiting for good/legitimate bots (Googlebot, Bingbot,
  DuckDuckBot, Yandex, etc.) via transient sliding-window counters;
  configurable per-bot limits in goodbots.conf (BotName|req/min);
  returns HTTP 429 with Retry-After: 60 when over limit.
- Unified MySQL-backed logging (itk_bot_log + itk_honeypot_log tables)
  replaces the old wp_options-based 100-entry cap.
- New Dashboard tab with terminal-style bot activity monitor: total
  blocked, today's count, rate-limited hits, top threat sources
  (bar chart), top IPs, top honeypot form types, active-module
  status panel.
- All optimizations from utils.php merged into Optimization tab as
  toggleable settings (was always-on before).
- Single admin page (Settings → InformatiQ Toolkit) with 8 tabs:
  Dashboard | Bot Blocker | Protection | Optimization | Honeypot |
  Bot Logs | Honeypot Logs | Config Files.
- Config file editor for badbots.conf, goodbots.conf, referrers.conf,
  networks.conf, allowed-ips.conf with AJAX save and transient flush.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

config/referrers.conf

@@ -0,0 +1,35 @@
+# Known spam or malicious referrers from .htaccess
+free-social-buttions.com
+best-seo-offer.com
+buttons-for-your-website.com
+www1.free-social-buttons.com
+www2.free-social-buttons.com
+www3.free-social-buttons.com
+100dollars-seo.com.com
+anonymizeme.pro
+site.ru
+www4.free-social-buttons.com
+free-social-buttons.com
+buttons-for-website.com
+social-buttons.com
+anticrawler.org
+blackhatworth.com
+best-seo-offer.com
+buttons-for-your-website.com
+best-seo-solution.com
+adcash.com
+darodar.com
+priceg.com
+hulfingtonpost.com
+gobongo.info
+slftsdybbg.ru
+ilovevitaly.com
+ilovevitaly.co
+ilovevitaly.ru
+webmonetizer.net
+make-money-online.com
+cenoval.ru
+o-o-6-o-o.com
+7makemoneyonline.com
+semalt.com
+keywords-monitoring-success.com