Add stan plugin option (#1000)

Author: fendor

package.json

@@ -471,6 +471,12 @@
           "scope": "resource",
           "type": "boolean"
         },
+        "haskell.plugin.stan.globalOn": {
+          "default": false,
+          "description": "Enables stan plugin",
+          "scope": "resource",
+          "type": "boolean"
+        },
         "haskell.plugin.tactics.codeActionsOn": {
           "default": true,
           "description": "Enables tactics code actions",
@@ -602,4 +608,4 @@
     "vscode-languageclient": "^7.0.0",
     "which": "^4.0.0"
   }
-}
+}