Add Weather (Open-Meteo) and Wikipedia connectors

- weather/ — Python MCP server (copiato da skald/scripts), no auth, free API
- wikipedia/ — nuovo Python MCP server, Wikipedia API pubblica, no auth
- Entrambi: mcp_local, scope global, auth none, dipendenza httpx
- connectors.json: +2 connector (totale 7), auth:none aggiunto anche a SSH

connectors/wikipedia/icon_lg.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 96 96">
+  <rect x="8" y="16" width="80" height="64" rx="6" fill="#f5f5f5" stroke="#aaa" stroke-width="2"/>
+  <text x="48" y="56" text-anchor="middle" font-family="serif" font-size="36" font-weight="bold" fill="#666">W</text>
+</svg>