新增: 合并请求文件变更列表拆解

app/views/api/v1/projects/_simple_gitea_file.jbuilder

@@ -0,0 +1,5 @@
+json.filename file["filename"]
+json.status file["status"]
+json.additions file["additions"]
+json.deletions file["deletions"]
+json.changes file["changes"]

app/views/api/v1/projects/pulls/pulls/files.json.jbuilder

@@ -0,0 +1,8 @@
+if params[:filepath].present? 
+  json.partial! "api/v1/projects/simple_gitea_diff_detail", diff: @result_object
+else
+  json.file_numbers @result_object[:total_data]
+  json.files @result_object[:data] do |file|
+    json.partial! "api/v1/projects/simple_gitea_file", file: file
+  end
+end