Add support for auto surround (#13217)

![result](https://github.com/zed-industries/zed/assets/32017007/c400081f-be5d-48fa-994f-90a00e2be359)

In the past, Zed used a single switch called `autoclose` to control both
`autoclose` and `auto_surround` functionalities:
+ `autoclose`: when input '(', append ')' automatically.
+ `auto_surround`: when select text and input '(', surround text with
'(' and ')' automatically.

This PR separates `auto_surround` from `autoclose` to support `<`. 

Previously, if `autoclose` of `<` was set to `false`, `auto_surround`
couldn't be used. However, setting `autoclose` to `true` would affect
the default behavior of simple expression. For example, `a < b` would
become `a <> b`.

For more information, see #13187.

Fix #12898.

Release Notes:

- Added support for `auto_surround`
([#12898](https://github.com/zed-industries/zed/issues/12898)).

assets/settings/default.json

@@ -146,6 +146,10 @@
   // opening parenthesis, bracket, brace, single or double quote characters.
   // For example, when you type (, Zed will add a closing ) at the correct position.
   "use_autoclose": true,
+  // Whether to automatically surround selected text when typing opening parenthesis,
+  // bracket, brace, single or double quote characters.
+  // For example, when you select text and type (, Zed will surround the text with ().
+  "use_auto_surround": true,
   // Controls how the editor handles the autoclosed characters.
   // When set to `false`(default), skipping over and auto-removing of the closing characters
   // happen only for auto-inserted characters.