Add bug report issue template (#75)

Author: markmur

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,55 @@
+---
+name: Bug report
+about: Create a bug report
+title: ''
+labels: 'Bug'
+assignees: ''
+---
+
+**Describe the bug**
+
+<!--
+A clear and concise description of what the bug is.
+-->
+
+**To Reproduce**
+
+<!--
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+-->
+
+**Expected behavior**
+
+<!--
+A clear and concise description of what you expected to happen.
+-->
+
+**Screenshots/Videos/Log output**
+
+<!--
+If applicable, add screenshots, videos or log output to help explain your problem.
+-->
+
+**Versions (please complete the following information):**
+
+<!--
+ - `@shopify/checkout-sheet-kit` version [e.g. 1.0.1]
+ - Device: [e.g. iPhone 15 Pro]
+ - OS: [e.g. iOS 16.0]
+-->
+
+**Shop domain**
+
+<!--
+This is optional, but will help us search logs for any errors that occurred server-side.
+-->
+
+**Additional context**
+
+<!--
+Add any other context about the problem here.
+-->