新增：仓库列表和分支列表

app/controllers/api/v1/projects/sync_repositories_controller.rb

@@ -1,6 +1,11 @@
 class Api::V1::Projects::SyncRepositoriesController < Api::V1::BaseController
   before_action :require_public_and_member_above
 
+  def index 
+    @sync_repositories = @project.sync_repositories
+    @group_sync_repository = @project.sync_repositories.group(:type, :external_repo_address, :sync_granularity).count
+  end
+
   def create 
     @sync_repository1, @sync_repository2, @sync_repository_branch1, @sync_repository_branch2 = Api::V1::Projects::SyncRepositories::CreateService.call(@project, sync_repository_params)
   end
@@ -16,6 +21,12 @@ class Api::V1::Projects::SyncRepositoriesController < Api::V1::BaseController
     end
   end
 
+  def branches 
+    return render_error("请输入正确的同步项目ID") unless params[:sync_repository_ids].present? 
+    @sync_repository_branches = SyncRepositoryBranch.where(sync_repository_id: params[:sync_repository_ids].split(","))
+    @group_sync_repository_branch = @sync_repository_branches.group(:gitlink_branch_name, :external_branch_name).count 
+  end
+
   private
   def sync_repository_params
     params.permit(:type, :external_token, :external_repo_address, :sync_granularity, :external_branch_name, :gitlink_branch_name, :first_sync_direction)