Support Emmet's wrap with abbreviation (#63383)

Closes https://github.com/zed-industries/zed/issues/15588


https://github.com/user-attachments/assets/2813d235-6dac-4fe6-9ae0-2783e16270ac

Release Notes:

- Added Emmet's wrap with abbreviation support

docs/src/languages/emmet.md

@@ -11,6 +11,39 @@ Emmet support is available through the [Emmet extension](https://github.com/zed-
 
 - Language Server: [olrtg/emmet-language-server](https://github.com/olrtg/emmet-language-server)
 
+## Wrap with abbreviation
+
+With the Emmet extension installed, you can wrap the current selections in an expanded [Emmet abbreviation](https://docs.emmet.io/abbreviations/):
+
+1. Select the text to wrap. With an empty selection, the enclosing HTML element is wrapped; if no enclosing element can be determined, the current line is wrapped instead.
+2. Run `editor: wrap with abbreviation` from the command palette. The last used abbreviation is prefilled and selected, so typing replaces it; `up` and `down` cycle through previously used abbreviations.
+3. Type an abbreviation, for example `div.wrapper>ul>li*3`, into the input that appears below the selection. A preview of the expansion is shown under the input as you type.
+4. Press `enter` to apply, or `escape` to cancel. If the abbreviation produces no expansion, the error is shown next to the input and the input stays open so you can correct it.
+
+For a single selection, the expansion is inserted as a snippet and the cursor is placed at the end of the expansion. With multiple selections, each selection is wrapped separately; overlapping selections are merged and wrapped once.
+
+The [documented wrap behaviors](https://docs.emmet.io/actions/wrap-with-abbreviation/) are supported:
+
+- Wrapping individual lines: mark the repeating element with `*` (without a number), for example `ul>li*`, and each selected line is wrapped in its own element. `$` numbering works too: `ul>li.item$*>a`.
+- Removing list markers: append the trim filter `|t`, for example `ul>li*|t`, to strip list markers such as `*`, `-`, or `1.` from the wrapped lines.
+- Controlling output position: use the `$#` placeholder inside attribute values or text nodes, for example `ul>li[title=$#]*>{$#}`.
+- The [comment filter](https://docs.emmet.io/filters/comment/) `|c` and the [BEM filter](https://docs.emmet.io/filters/bem/) `|bem` are also supported and can be combined, for example `div#page>p.intro|c|bem`.
+
+Selections that partially cover an opening or closing tag are expanded to the whole element before wrapping. Wrapping is a markup action: it is not offered in stylesheets, where Emmet provides completions instead.
+
+The action has no default keybinding. To add one, bind it in your keymap:
+
+```json [keymap]
+[
+  {
+    "context": "Editor && mode == full",
+    "bindings": {
+      "ctrl-alt-w": "editor::WrapWithAbbreviation"
+    }
+  }
+]
+```
+
 <!--
 TBD: Document Emmet usage in zed with: HTML, PHP, ERB, Javascript, TSX, CSS
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