新增：branch列表接口

app/services/api/v1/projects/branches/list_service.rb

@@ -0,0 +1,40 @@
+class Api::V1::Projects::Branches::ListService < ApplicationService 
+
+  attr_accessor :project, :token, :owner, :repo, :name, :page, :limit
+  attr_accessor :gitea_data
+
+  def initialize(project, params, token=nil)
+    @project = project 
+    @owner = project&.owner.login 
+    @repo = project&.identifier 
+    @token = token 
+    @name = params[:name] 
+    @page = params[:page] 
+    @limit = params[:limit]
+  end
+
+  def call 
+    load_gitea_data
+    
+    gitea_data
+  end
+
+  private 
+  def request_params 
+    params = {
+      access_token: token,
+      page: page, 
+      limit: limit
+    }
+    params.merge!({name: name}) if name.present? 
+
+    params
+  end
+
+  def load_gitea_data 
+    puts request_params
+    @gitea_data = $gitea_client.get_repos_branches_by_owner_repo(owner, repo, {query: request_params}) rescue nil
+    puts @gitea_data
+    raise Error, '获取分支列表失败！' unless @gitea_data.is_a?(Hash)
+  end
+end