Add crowdsec plugin (#4283)

.claude-plugin/marketplace.json

@@ -986,6 +986,20 @@
         "mcp"
       ]
     },
+    {
+      "name": "crowdsec",
+      "description": "Operational skill for installing, configuring, operating, and debugging CrowdSec (cscli, LAPI/CAPI, hub, bouncers, WAF/AppSec) across bare-metal, Docker, and Kubernetes.",
+      "author": {
+        "name": "CrowdSec"
+      },
+      "category": "security",
+      "source": {
+        "source": "url",
+        "url": "https://github.com/crowdsecurity/crowdsec-skill.git",
+        "sha": "8238c7991edf22592d1c5acb9170fb3f6c400323"
+      },
+      "homepage": "https://www.crowdsec.net"
+    },
     {
       "name": "crowdstrike-falcon-foundry",
       "description": "CrowdStrike Falcon Foundry development skills for building cybersecurity applications on the Falcon platform. Includes UI development, collections, functions, workflows, API integration, security patterns, and debugging workflows.",