new: merge request template

.gitlab/new_jobscript_contribution_review_checklist.md

+# New Jobscript Template Contribution Review Checklist
+
+## General Information
+
+- **Author**: [Author's name]
+- **Reviewer**: [Reviewer's name]
+- **Issue Reference**: [Link to related issue number]
+- **Overview**: Which HPC system and what software/framework/library is the
+  jobscript template for, and what are the basic configuration options and
+  restrictions.
+
+---
+
+## Contribution Review Checklist
+
+- [ ] Merge request contains link to the original issue(s).
+- [ ] A valid directory for the system already existed and was not created as a
+      part of this merge request.
+- [ ] A directory named after the software/framework/library has been created
+      in the dedicated system directory.
+- [ ] The new directory contains a template file.
+- [ ] Template is well structured and readable.
+- [ ] The new directory contains a valid lamec.json file.