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/git/src/git.rs

@@ -43,6 +43,8 @@ actions!(
         /// Shows git blame information for the current file.
         #[action(deprecated_aliases = ["editor::ToggleGitBlame"])]
         Blame,
+        /// Shows the git history for the current file.
+        FileHistory,
         /// Stages the current file.
         StageFile,
         /// Unstages the current file.