Add file history view (#42441)

Closes #16827

Release Notes:

- Added: File history view accessible via right-click context menu on
files in the editor or project panel. Shows commit history for the
selected file with author, timestamp, and commit message. Clicking a
commit opens a diff view filtered to show only changes for that specific
file.

<img width="1293" height="834" alt="Screenshot 2025-11-11 at 16 31 32"
src="https://github.com/user-attachments/assets/3780d21b-a719-40b3-955c-d928c45a47cc"
/>
<img width="1283" height="836" alt="Screenshot 2025-11-11 at 16 31 24"
src="https://github.com/user-attachments/assets/1dc4e56b-b225-4ffa-a2af-c5dcfb2efaa0"
/>

---------

Co-authored-by: cameron <cameron.studdstreet@gmail.com>

crates/editor/src/mouse_context_menu.rs

@@ -276,7 +276,8 @@ pub fn deploy_context_menu(
                     !has_git_repo,
                     "Copy Permalink",
                     Box::new(CopyPermalinkToLine),
-                );
+                )
+                .action_disabled_when(!has_git_repo, "File History", Box::new(git::FileHistory));
             match focus {
                 Some(focus) => builder.context(focus),
                 None => builder,