ADD [gitea] get repository by id

app/services/gitea/repository/get_by_id_service.rb

@@ -0,0 +1,31 @@
+class Gitea::Repository::GetByIdService < Gitea::ClientService
+  attr_reader :owner, :repo_id
+
+  def initialize(owner, repo_id)
+    @owner   = owner
+    @repo_id = repo_id
+  end
+
+  def call
+    response = get(url, params)
+    render_result(response)
+  end
+
+  private
+  def params
+    Hash.new.merge(token: owner.gitea_token)
+  end
+
+  def url
+    "/repositories/#{repo_id}".freeze
+  end
+
+  def render_result(response)
+    case response.status
+    when 200
+      JSON.parse(response.body)
+    else
+      nil
+    end
+  end
+end