update references (#60)

#### 📖 Summary

- Replace all github refs with gitea url

#### 📑 Test Plan

> 💡 Select your test plan for the code changes.

- [x] Tested via Drone.io 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: OCram85/PSCredentialStore#60

.gitea/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,19 @@
+#### :book: Summary
+
+<!-- Provide a summary of your changes. Describe the why and not how. -->
+
+#### :bookmark_tabs: Test Plan
+
+> :bulb: Select your test plan for the code changes.
+
+- [ ] Tested via Drone.io pipeline
+- [ ] Custom test
+- [ ] No test plan
+
+##### Details / Justification
+
+<!-- Add your test details or justification for missing tests here. -->
+
+#### :books: Additional Notes
+
+<!-- A place for additional detail notes. -->