chore: add issue template for bug reports (#450)

Author: elbandito

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,32 @@
+---
+name: Issue report
+about: Create a report or request for help
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the issue**
+
+A clear and concise description of what the issue is.
+
+**Version information:**
+ - Tableau version: (or note if using Tableau Online)
+ - OS: [e.g. iOS]
+ - Browser [e.g. chrome, safari]
+ - Version [e.g. 22]
+
+**Steps to reproduce (please include a code snippet, if possible):**
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+A clear and concise description of what you expected to happen.
+
+**Screenshots and workbook**
+
+If possible, attach a workbook with sample data add/or screenshots to help explain your problem.
+
+**NOTE:** Be careful not to post user names, passwords, auth tokens or any other private or sensitive information.