Add versioning schema: version (int), version_string, version_release_date to all 10 connectors

- version: intero per-connector (parte da 1)
- version_string: semver ereditato (display only)
- version_release_date: ISO 8601 (display only)
- Campi identici in index (connectors.json) e manifest (connector.json)
- Aggiunto connector.json alle files[] di gmail, gcal, email, ssh, tavily
- Aggiornata documentazione in SKALD.md

connectors/whatsapp/connector.json

@@ -1,13 +1,20 @@
 {
   "id": "whatsapp",
   "name": "WhatsApp",
-  "version": "2.0.1",
   "type": "mcp_local",
   "scope": "user",
   "launch_command": "node index.js",
   "transport": "stdio",
-  "requires": ["NODE"],
-  "tags": ["messaging", "mcp", "local", "whatsapp", "qr"],
+  "requires": [
+    "NODE"
+  ],
+  "tags": [
+    "messaging",
+    "mcp",
+    "local",
+    "whatsapp",
+    "qr"
+  ],
   "dependencies": [
     "@whiskeysockets/baileys>=6.7.9",
     "qrcode>=1.5.4"
@@ -17,20 +24,27 @@
     "Open the connector in Skald and scan the QR code with your WhatsApp phone.",
     "The session is persisted and survives restarts."
   ],
-  "docs": [{
-    "lang": "en",
-    "description": "Send and read WhatsApp messages from your own linked account. Uses Baileys multi-device protocol \u2014 no browser, no Chromium needed. Link via QR code.",
-    "llm_short_description": "Read and send WhatsApp messages, list chats and search contacts on the user\u2019s linked WhatsApp."
-  }],
+  "docs": [
+    {
+      "lang": "en",
+      "description": "Send and read WhatsApp messages from your own linked account. Uses Baileys multi-device protocol \u2014 no browser, no Chromium needed. Link via QR code.",
+      "llm_short_description": "Read and send WhatsApp messages, list chats and search contacts on the user\u2019s linked WhatsApp."
+    }
+  ],
   "auth": {
     "type": "qr"
   },
   "mcp_config": {
     "command": "node",
-    "args": ["index.js"],
+    "args": [
+      "index.js"
+    ],
     "transport": "stdio"
   },
   "homepage": "https://github.com/WhiskeySockets/Baileys",
   "icon_small": "icon_sm.png",
-  "icon_large": "icon_lg.png"
+  "icon_large": "icon_lg.png",
+  "version": 1,
+  "version_string": "2.0.1",
+  "version_release_date": "2026-07-19"
 }