Merge #8629 #8657

8629: Allow pressing | to surround closure arguments in VSCode r=matklad a=Smittyvb

This makes pressing <kbd>|</kbd> while some text is selected surround that text with pipes. This is useful when writing closures. 

In this demo, I press <kbd>|</kbd> to easily surround some text (`predicate`) with pipe characters to create a closure. Before, this would have replaced `predicate` with just `|`.

![](https://user-images.githubusercontent.com/10530973/115778847-3c257e00-a385-11eb-8c80-e0db970747db.gif)

(I am getting failures when I do `cargo test` even on `master` locally (due to #8585 I think), but GH Actions is fine with this)

8657: npm update r=matklad a=kjeremy



Co-authored-by: Smittyvb <me@smitop.com>
Co-authored-by: Jeremy Kolb <kjeremy@gmail.com>

editors/code/language-configuration.json

@@ -23,7 +23,8 @@
         ["(", ")"],
         ["<", ">"],
         ["\"", "\""],
-        ["'", "'"]
+        ["'", "'"],
+        ["|", "|"]
     ],
     "indentationRules": {
         "increaseIndentPattern": "^.*\\{[^}\"']*$|^.*\\([^\\)\"']*$",