Add issue and feature request templates (#375)

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: bug
+assignees: ''
+
+---
+
+**Describe the bug**
+A concise description of what the bug is.
+
+**Steps to reproduce**
+
+**Expected outcome**
+A concise description of what you expected to happen.
+
+**Environment**
+
+* App Mesh controller version
+* Envoy version
+* Are you using any integrations? X-ray, Jaeger etc. If so versions?
+* Kubernetes version
+* Using EKS (yes/no), if so version?
+
+**Additional Context**:

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,17 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: enhancement
+assignees: ''
+
+---
+
+**Is your feature request related to a problem?**
+A description of what the problem is. For example: I'm frustrated when [...]
+
+**Describe the solution you'd like**
+A description of what you want to happen.
+
+**Describe alternatives you've considered**
+A description of any alternative solutions or features you've considered.