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/proto/src/proto.rs

@@ -294,6 +294,8 @@ messages!(
     (GitCheckoutFiles, Background),
     (GitShow, Background),
     (GitCommitDetails, Background),
+    (GitFileHistory, Background),
+    (GitFileHistoryResponse, Background),
     (SetIndexText, Background),
     (Push, Background),
     (Fetch, Background),
@@ -492,6 +494,7 @@ request_messages!(
     (InstallExtension, Ack),
     (RegisterBufferWithLanguageServers, Ack),
     (GitShow, GitCommitDetails),
+    (GitFileHistory, GitFileHistoryResponse),
     (GitReset, Ack),
     (GitDeleteBranch, Ack),
     (GitCheckoutFiles, Ack),
@@ -657,6 +660,7 @@ entity_messages!(
     CancelLanguageServerWork,
     RegisterBufferWithLanguageServers,
     GitShow,
+    GitFileHistory,
     GitReset,
     GitDeleteBranch,
     GitCheckoutFiles,