feat(skills): add native Claude Code plugin installation support (#2523)

Co-authored-by: Anthony Fu <github@antfu.me>

.claude-plugin/marketplace.json

@@ -0,0 +1,17 @@
+{
+  "name": "slidev-plugins",
+  "owner": {
+    "name": "Anthony Fu",
+    "url": "https://github.com/antfu"
+  },
+  "metadata": {
+    "description": "Claude Code plugins for the Slidev presentation framework"
+  },
+  "plugins": [
+    {
+      "name": "slidev",
+      "source": "./",
+      "description": "Claude Code skill for creating and presenting Slidev slidedecks"
+    }
+  ]
+}

.claude-plugin/plugin.json

@@ -0,0 +1,12 @@
+{
+  "name": "slidev",
+  "version": "1.0.0",
+  "description": "Claude Code skill for creating and presenting Slidev slidedecks",
+  "author": {
+    "name": "Anthony Fu",
+    "url": "https://github.com/antfu"
+  },
+  "repository": "https://github.com/slidevjs/slidev",
+  "license": "MIT",
+  "keywords": ["presentations", "slides", "markdown", "vue", "developer-tools"]
+}