Create ISSUE_TEMPLATE

.github/ISSUE_TEMPLATE

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+### Documentation
+
+Please check the official documentation before asking questions: https://docs.abp.io
+
+### GitHub Issues
+
+GitHub issues are for bug reports, feature requests and other discussions about the framework.
+
+If you're creating a bug/problem report, please include followings:
+
+* Your **ABP Framework version**.
+* Your **User Interface** type (Angular/MVC/React... etc.) if the issue is related to a specific UI
+* Exception message and **stack trace** if available (check the logs).
+* Steps needed to **reproduce** the problem.
+
+Please **write in English**.
+
+### Stack Overflow
+
+Please use Stack Overflow for your questions about using the framework, templates and samples:
+
+https://stackoverflow.com/questions/tagged/abp
+
+Use **abp** tag in your questions.