Add SVG preview (#32694)

Closes #10454

Implements SVG file preview capability similar to the existing markdown
preview.
- Adds `svg_preview` crate with preview view and live reloading upon
file save.
- Integrates SVG preview button in quick action bar.
- File preview shortcuts (`ctrl/cmd+k v` and `ctrl/cmd+shift+v`) are
extension-aware.

Release Notes:

- Added SVG file preview, accessible via the quick action bar button or
keyboard shortcuts (`ctrl/cmd+k v` and `ctrl/cmd+shift+v`) when editing
SVG files.

Cargo.toml

@@ -95,6 +95,7 @@ members = [
     "crates/markdown_preview",
     "crates/media",
     "crates/menu",
+    "crates/svg_preview",
     "crates/migrator",
     "crates/mistral",
     "crates/multi_buffer",
@@ -304,6 +305,7 @@ lmstudio = { path = "crates/lmstudio" }
 lsp = { path = "crates/lsp" }
 markdown = { path = "crates/markdown" }
 markdown_preview = { path = "crates/markdown_preview" }
+svg_preview = { path = "crates/svg_preview" }
 media = { path = "crates/media" }
 menu = { path = "crates/menu" }
 migrator = { path = "crates/migrator" }