feat: add terminal-secure icon and metadata (#456)

Author: alexdima

src/icons/terminal-secure.svg

@@ -1725,5 +1725,8 @@
   ],
   "60548": [
     "new-session"
+  ],
+  "60549": [
+    "terminal-secure"
   ]
 }

src/template/mapping.json

@@ -789,6 +789,11 @@
     "category": "application",
     "description": "Terminal or console"
   },
+  "terminal-secure": {
+    "tags": ["console", "command", "shell", "cli", "lock", "secure", "protected"],
+    "category": "application",
+    "description": "Secure terminal"
+  },
   "text-size": {
     "tags": ["font", "typography", "scale", "zoom"],
     "category": "text",