fix: remove outputSchema from tools for Claude Code compatibility

Claude Code doesn't support the outputSchema field in MCP tool
definitions (added in protocol 2025-03-26). Its presence caused tool
search to not find any iwdp-mcp tools.

Fix: use `any` as the output type parameter in all AddTool handlers,
which prevents the Go SDK from generating outputSchema. This matches
how chrome-devtools-mcp (which works) defines its tools.

Author: nnemirovsky

.claude-plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "iwdp-mcp",
-  "version": "0.2.2",
+  "version": "0.2.3",
   "description": "iOS Safari debugging via ios-webkit-debug-proxy — MCP server with full WebKit Inspector Protocol support",
   "mcpServers": {
     "iwdp-mcp": {