added pull request template

moves github specific files into .github

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,14 @@
+<!--
+Thank you for your pull request.
+
+If this fixes a github issue, make sure to have a line saying 'Fixes #XXXX' (without quotes) in the commit message.
+-->
+
+##### Checklist
+<!-- Remove items that do not apply. For completed items, change [ ] to [x]. -->
+- [ ] Documentation is added or updated
+- [ ] New files have a LGPL 2.1 license statement
+- [ ] Tested with the following card: <!-- use `opensc-tool -n` to get the name of your card -->
+	- [ ] tested PKCS#11
+	- [ ] tested Windows Minidriver
+	- [ ] tested macOS Tokend