chore(.claude-plugin): rename marketplace name to code-intelligence (#88)

Rename the marketplace plugin name from "language-server-please" to
"code-intelligence" to align with the official "Code intelligence"
category naming in Claude Code documentation.

Author: amondnet

.claude-plugin/marketplace.json

@@ -1,5 +1,5 @@
 {
-  "name": "language-server-please",
+  "name": "code-intelligence",
   "owner": {
     "name": "PassionFactory"
   },