Update issue templates (#1419)

* Update issue templates

* Update bug_report.md

Author: justin808

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,23 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+A bug is a crash or incorrect behavior. If you have a debugging or troubleshooting question, please open [a discussion](https://github.com/shakacode/react_on_rails/discussions).
+
+## Environment
+
+1. Ruby version:
+2. Rails version:
+3. Webpacker version:
+4. React on Rails version:
+
+## Expected behavior
+
+## Actual behavior
+
+## Small, reproducible repo

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.