Bug, feature request templates (#490)

* Added bug, feature request templates 
---------

Co-authored-by: Alexander Batishchev <abatishchev@gmail.com>

Author: CADBIMDeveloper

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+labels: bug
+---
+
+**Version, target platform, OS**
+Which package and what version, is it the latest?
+What are the target platform and the OS?
+
+**Exception message, stack trace**
+If avaliable
+
+**Description**
+A clear and concise description of the issue
+
+**How to reproduce**
+Add here the steps to reproduce the issue
+
+**Additional context**
+Add any other context about the problem here

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for the project
+---
+
+**Version, target platform, OS**
+Which package and what version, is it the latest?
+What are the target platform and the OS?
+
+**Describe the problem you are trying to solve.**
+Summary of the proposed changes
+
+**Available workarounds**
+Is it possible to achieve what you're asking for in a different way?
+
+**Additional context**
+Add any other context or screenshots about the feature request

.github/pull_request_template.md

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+## Description
+
+Resolves #xyz.
+
+A summary of the changes and which issue it resolves.
+
+## Checklist
+
+- [ ] Tests added
+- [ ] Version bumped
+- [ ] Changelog updated