WIP: Add a setting to visually redact enviroment variables (#7124)

Release Notes:

- Added bash syntax highlighting to `.env` files. 
- Added a `private_files` setting for configuring which files should be
considered to contain environment variables or other sensitive
information.
- Added a `redact_private_values` setting to add or remove censor bars
over variable values in files matching the `private_files` patterns.
-(internal) added a new `redactions.scm` query to our language support,
allowing different config file formats to indicate where environment
variable values can be identified in the syntax tree, added this query
to `bash`, `json`, `toml`, and `yaml` files.

---------

Co-authored-by: Nathan <nathan@zed.dev>

crates/project/src/project.rs

@@ -6470,6 +6470,7 @@ impl Project {
                             path: entry.path.clone(),
                             worktree: worktree_handle.clone(),
                             is_deleted: false,
+                            is_private: entry.is_private,
                         }
                     } else if let Some(entry) = snapshot.entry_for_path(old_file.path().as_ref()) {
                         File {
@@ -6479,6 +6480,7 @@ impl Project {
                             path: entry.path.clone(),
                             worktree: worktree_handle.clone(),
                             is_deleted: false,
+                            is_private: entry.is_private,
                         }
                     } else {
                         File {
@@ -6488,6 +6490,7 @@ impl Project {
                             mtime: old_file.mtime(),
                             worktree: worktree_handle.clone(),
                             is_deleted: true,
+                            is_private: old_file.is_private,
                         }
                     };