Added github templates

Author: mcg-web

.github/ISSUE_TEMPLATE.md

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+| Q                | A
+| ---------------- | -----
+| Bug report?      | yes/no
+| Feature request? | yes/no
+| BC Break report? | yes/no
+| RFC?             | yes/no
+| Version/Branch   | x.y.z
+
+<!--
+Please fill in this template according to your issue.
+-->

.github/PULL_REQUEST_TEMPLATE.md

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+| Q             | A
+| ------------- | ---
+| Bug fix?      | yes/no
+| New feature?  | yes/no
+| BC breaks?    | yes/no
+| Deprecations? | yes/no
+| Tests pass?   | yes/no
+| Documented?   | yes/no
+| Fixed tickets | #... <!-- #-prefixed issue number(s), if any -->
+| License       | MIT
+
+<!--
+- Please fill in this template according to the PR you're about to submit.
+- Replace this comment by a description of what your PR is solving.
+-->