chore: add bug report template

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,36 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: "[BUG] "
+labels: ''
+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.
+
+**Backtrace**
+If the bug rises an error, please attach the full backtrace. To be sure to obtain a backtrace, you should launch Emacs with `MINEMACS_DEBUG=1 emacs` or `emacs --debug-init`.
+
+```elisp
+;; Put the backtrace here!
+```
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Additional context**
+Add any other context about the problem here.