refactor: move backend to monorepo

backend/.gitlab/issue_templates/feature.md

@@ -0,0 +1,20 @@
+## Description
+
+(Describe the feature that you're requesting concisely)
+
+
+## Explanation
+
+(Explain why the feature is necessary)
+
+
+## Mockups/Data
+
+(If possible, provide mockups or examples of communication, which demonstrate the feature)
+
+
+## Dependencies, issues to be resolved beforehand
+
+(List issues or dependencies that need to be resolved before this feature can be implemented)
+
+/label ~feature ~meeting