Add templates for issues and PRs

Signed-off-by: Jonas Zohren <15788906+jfowl@users.noreply.github.com>

.github/pull_request_template.md

@@ -0,0 +1,17 @@
+### Component/Part
+<!-- e.g database -->
+
+### Description
+This PR fixes/adds/improves/...
+
+### Steps
+
+<!-- please tick steps this PR performs (if something is not necessary, please tick anyway to indicate you considered it) -->
+
+- [ ] added implementation
+- [ ] added / updated tests
+- [ ] added / updated documentation
+- [ ] extended changelog
+
+### Related Issue(s)
+<!-- e.g #123 -->