Improve logic for finding VSCode / Cursor settings files (#32721)

* Fixes a bug where for Cursor, `config_dir()` (Zed's config dir) was
being used instead of `dirs::config_dir` (`~/.config` /
`$XDG_CONFIG_HOME`).

* Adds support for windows, before it was using the user profile folder
+ `/.config` which is incorrect.

* Now looks using a variety of product names - `["Code", "Code - OSS",
"Code Dev", "Code - OSS Dev", "code-oss-dev", "VSCodium"]`.

* Now shows settings path that was read before confirming import.

Including this path in the confirmation modal is a bit ugly (making it
link-styled and clickable would be nice), but I think it's better to
include it now that it is selecting the first match of a list of
candidate paths:


![image](https://github.com/user-attachments/assets/ceada4c2-96a6-4a84-a188-a1d93521ab26)

Release Notes:

- Added more settings file locations to check for VS Code / Cursor
settings import.

Cargo.lock

@@ -14605,12 +14605,12 @@ dependencies = [
  "fs",
  "gpui",
  "log",
- "paths",
  "schemars",
  "serde",
  "settings",
  "theme",
  "ui",
+ "util",
  "workspace",
  "workspace-hack",
 ]