Resolve "Add GitLab description templates for MR and issues"

Closes #4 (closed)

.gitlab/issue_templates/bug_report.md

+### Summary
+_Summarise the encountered bug concisely_
+
+
+### Steps to reproduce
+_How can this be reproduced? If you can, point to specific files/configurations where the bug occurs_
+
+
+### What is the current _bug_ behaviour?
+_More about the behaviour of the bug_
+
+
+### What is the expected _correct_ behaviour?
+_Which behaviour would you have expected?_
+
+
+### Relevant logs, screenshots, files...?
+_Anything that helps reproducing the bug_
+
+<!-- Put very long log outputs within the <pre></pre> tags below -->
+<!-- If this doesn't apply, delete the whole <details></details> block -->
+<details>
+<summary>Expand to see logs</summary>
+<pre>
+
+</pre>
+</details>
+
+#### Reproducing input
+_Do you have input files reproducing the problem? Insert them here:_
+
+| Input data | |
+| - | - |
+| Simulation Case | _Description goes here_ |
+| GMSH grid file | _if any_ |
+| Run config file | |
+
+### Ideas how to fix this?
+_Add them here, if you have any._
+
+/label ~Bug