Support assigning numeric value to "editor.wrappingIndent"

- VSCode Version: 1.19.3 `editor.wrappingIndent` is currently supporting `"none"`, `"same"`, `"indent"`. The problem with `"same"` is that it is difficult to know where the new line starts, and the problem with `"indent"` is that it is difficult to know where the new block starts. (Also, I don't like `"none"` 😜) Many IDEs and editors support custom numeric value for wrapping indent. I hope this feature is also supported in Visual Studio Code. **Current:** `"editor.wrappingIndent": "same"`  **Desired:** `"editor.wrappingIndent": 1`