Add github templates and CONTRIBUTING.md file.

Fix for #1685

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,35 @@
+---
+name: Bug Report
+about: Report broken or incorrect behaviour
+---
+
+### Summary
+
+<!-- A summary of your bug report -->
+
+### Reproduction Steps
+
+<!-- What you did to make it happen. Ideally there should be a short code snippet in this section to help reproduce the bug. -->
+
+### Expected Results
+
+<!-- What you expected to happen -->
+
+### Actual Results
+
+<!-- What actually happened. If there is a traceback, please show the entire thing. -->
+
+
+### Checklist
+
+<!-- Put an x inside [ ] to check it -->
+
+- [ ] I have searched the open issues for duplicates.
+- [ ] I have shown the entire traceback, if possible.
+- [ ] I have removed my token from display, if visible.
+
+### System Information
+
+- discord.py version:
+- Python version:
+- Operating system: