open picker (#14524)

Release Notes:

- linux: Added a fallback Open picker for when XDG is not working
- Added a new setting `use_system_path_prompts` (default true) that can
be disabled to use Zed's builtin keyboard-driven prompts.

---------

Co-authored-by: Max <max@zed.dev>

crates/project/Cargo.toml

@@ -59,6 +59,7 @@ serde.workspace = true
 serde_json.workspace = true
 settings.workspace = true
 sha2.workspace = true
+shellexpand.workspace = true
 shlex.workspace = true
 similar = "1.3"
 smol.workspace = true