feat(api): extend commit and diff services with new functionality

- Add FindCommit, ListCommitsByOid, CommitIsAncestor RPCs to CommitService
- Add CheckObjectsExist, CommitsByMessage, GetCommitStats RPCs to CommitService
- Add LastCommitForPath, CountCommits, CountDivergingCommits RPCs to CommitService
- Add RawDiff, RawPatch, FindChangedPaths RPCs to DiffService
- Add FindMergeBase, WriteRef, SearchFilesByContent RPCs to RepositoryService
- Add SearchFilesByName, ObjectsSize, RepositorySize RPCs to RepositoryService
- Add FindLicense, OptimizeRepository, GetRawChanges RPCs to RepositoryService
- Add FetchRemote, CreateRepositoryFromURL RPCs to RepositoryService
- Implement server handlers for all new RPC methods
- Add new modules for commit counting, finding, and querying features
- Add new modules for diff changed paths and raw operations
- Add new modules for refs and remote operations
- Remove unnecessary comments from various source files
- Update proto definitions with new message types and service methods

server/mod.rs

@@ -38,6 +38,8 @@ mod commit;
 mod diff;
 mod merge;
 mod pack;
+mod refs;
+mod remote;
 mod repository;
 mod repository_maint;
 mod tag;
@@ -53,8 +55,8 @@ use crate::bare::GitBare;
 use crate::error::{GitError, GitResult};
 use crate::pb::{
     archive_service_server, blame_service_server, branch_service_server, commit_service_server,
-    diff_service_server, merge_service_server, pack_service_server, repository_service_server,
-    tag_service_server, tree_service_server,
+    diff_service_server, merge_service_server, pack_service_server, ref_service_server,
+    remote_service_server, repository_service_server, tag_service_server, tree_service_server,
 };
 
 #[derive(Clone)]
@@ -473,6 +475,8 @@ pub async fn serve(
         .add_service(diff_service_server::DiffServiceServer::new(svc.clone()))
         .add_service(merge_service_server::MergeServiceServer::new(svc.clone()))
         .add_service(pack_service_server::PackServiceServer::new(svc.clone()))
+        .add_service(ref_service_server::RefServiceServer::new(svc.clone()))
+        .add_service(remote_service_server::RemoteServiceServer::new(svc.clone()))
         .add_service(tag_service_server::TagServiceServer::new(svc.clone()))
         .add_service(tree_service_server::TreeServiceServer::new(svc));
     tracing::info!("server ready, starting to accept connections");