debugger: Add comment-preserving debug.json editing (#32896)

Release Notes:

- Re-added "Save to `debug.json`" for custom debug tasks

---------

Co-authored-by: Cole Miller <cole@zed.dev>

crates/debugger_ui/Cargo.toml

@@ -50,7 +50,7 @@ project.workspace = true
 rpc.workspace = true
 serde.workspace = true
 serde_json.workspace = true
-# serde_json_lenient.workspace = true
+serde_json_lenient.workspace = true
 settings.workspace = true
 shlex.workspace = true
 sysinfo.workspace = true
@@ -58,6 +58,8 @@ task.workspace = true
 tasks_ui.workspace = true
 terminal_view.workspace = true
 theme.workspace = true
+tree-sitter.workspace = true
+tree-sitter-json.workspace = true
 ui.workspace = true
 util.workspace = true
 workspace.workspace = true