Add check js survey

**Problem**
We'd like to understand the types of problems users are running into when using the checkJs feature in real world code. This is not something we can determine automatically

**Fix**
The TS team has put together a short survey that will hopefully help them understand how people are using checkJS and what problems they run into. This change adds client side logic to show the survey in the following case:

- A user as opened 10 projects that have checkJS set
- And they have not been prompted to complete the survey previously
- And they have not opted out of all js/ts surveys

extensions/typescript-language-features/package.json

@@ -587,6 +587,12 @@
           "default": true,
           "description": "%typescript.suggest.enabled%",
           "scope": "resource"
+        },
+        "typescript.surveys.enabled": {
+          "type": "boolean",
+          "default": true,
+          "description": "%configuration.surveys.enabled%",
+          "scope": "window"
         }
       }
     },