Update issue templates

Author: CarlosNZ

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,20 @@
+---
+name: Bug report
+about: Reporting bugs for json-edit-react
+title: Bug report
+labels: bug
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is (and how to reproduce it, if relevant)
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Online demo**
+Please try and reproduce problem using a fork of [this sandbox](https://codesandbox.io/p/sandbox/json-edit-react-demo-g5qlym?file=%2Fsrc%2FApp.js%3A11%2C11), and post the link here. If you can't reproduce the problem there, it's likely to be due to something outside of the component itself.