ci: added pr template

Author: simonkovtyk

.github/pull_request_template.md

@@ -0,0 +1,22 @@
+---
+name: Feature or bug fix
+about: Add a feature or a bug fix
+title: [PULL]: add your description here...
+labels: feature
+assignees: simonkovtyk
+
+---
+
+**Relates your request to an existing bug?**
+*Please delete what does not apply.*
+My new feature **[does/doesn't]** relate to an existing bug.
+The existing bug can be found here: **[issue-link]**.
+
+**Describe the new feature**
+A clear and concise description of what you've changed.
+
+**Explain your changes**
+Give a description of what you've changed.
+
+**Additional context**
+Add any other context or output about the new feature here.