chore: add git mr templates

.gitlab/merge_request_templates/Default.md

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+# MERGE REQUEST
+
+## Summary
+
+(Summarize the changes that have been made)
+
+## Videos
+
+- Please upload videos if there are interactions included: e.g: progress bar, spinner, popup, drawer, etc
+- Remove this section if not uploading Videos
+
+## Screenshots
+
+- Show whole browser screenshot with URL bar shown where the route is shown
+- Remove this section if not uploading Screenshots
+
+## Redmine
+
+- Put any related links related to this Merge Request
+
+## Checklist
+
+Change the `[ ]` to `[x]` for each of these list that are applicable, remove any list item that are not applicable
+
+- [ ] I fixed|updated|added unit tests and integration tests for each feature (if applicable).
+- [ ] No `error` nor `warning` in the console.
+- [ ] I added videos for the developed feature / bug fix. (Please upload videos if there are interactions included: e.g: progress bar, spinner, popup, drawer, etc)
+- [ ] I added screenshots of developed feature