Move non-empty files from test dir to spec and adopt specs

Signed-off-by: Sebastian Serth <Sebastian.Serth@student.hpi.de>

spec/factories/error_templates.rb

@@ -0,0 +1,7 @@
+FactoryBot.define do
+  factory :error_template do
+    execution_environment { nil }
+    name { "MyString" }
+    signature { "MyString" }
+  end
+end