Adds Gitea meta files (#21)

#### 📖 Summary

- adds missing gitea meta files

#### 📑 Test Plan

> 💡 Select your test plan for the code changes.

- [x] Tested via CI pipeline
- [ ] Custom test
- [ ] No test plan

##### Details / Justification

<!-- Add your test details or justification for missing tests here. -->

#### 📚 Additional Notes

<!-- A place for additional detail notes. -->

Co-authored-by: OCram85 <marco.blessing@googlemail.com>
Reviewed-on: #21

.gitea/ISSUE_TEMPLATE.md

@@ -0,0 +1,10 @@
+---
+name: 'Default'
+about: 'Use this template if nothing seems to work.'
+title: ':question: '
+labels:
+  - question
+---
+#### :grey_question: Simply ask your question here: :grey_question:
+
+<!-- Take your time an think about your problem.... -->