Add github templates adapted from https://github.com/keepassxreboot/keepassxc

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,22 @@
+<!--- Provide a general summary of your changes in the title above -->
+
+## Description
+<!--- Describe your changes in detail -->
+
+## Motivation and Context
+<!--- Why is this change required? What problem does it solve? -->
+<!--- If it fixes an open issue, please link to the issue here. -->
+
+## How Has This Been Tested?
+<!--- Please describe in detail how you tested your changes. -->
+<!--- Include details of your testing environment, and the tests you ran to -->
+<!--- see how your change affects other areas of the code, etc. -->
+
+## Screenshots (if appropriate):
+
+## Types of changes
+<!--- What types of changes does your code introduce? -->
+<!--- Please remove all lines which don't apply. -->
+- ✅ Bug fix (non-breaking change which fixes an issue)
+- ✅ New feature (non-breaking change which adds functionality)
+- ✅ Breaking change (fix or feature that would cause existing functionality to change)