Add issue templates

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,25 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: 'bug'
+assignees: ''
+
+---
+
+### Environment
+
+* Elixir version (elixir -v):
+* Phoenix version (mix deps):
+* Phoenix LiveView version (mix deps):
+* Beacon version (mix deps):
+* Operating system:
+* Browsers on which you attempted to reproduce this bug (the more the merrier):
+
+### Actual behavior
+
+<!--
+Describe the actual behaviour. If you are seeing an error, include the full message and stacktrace.
+-->
+
+### Expected behavior

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,17 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: 'feature-request'
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is.
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.