chore: add bug report issue template

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,35 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: 'bug: '
+labels: ''
+assignees: ''
+
+---
+
+**Before continuing**
+Please check the (known issues)[https://github.com/r3pwn/libmjolnir/wiki/Known-issues] wiki page to ensure the issue isn't already resolved. Once that is done, please delete this section.
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Desktop (please complete the following information):**
+ - OS: [e.g. Windows]
+ - Browser [e.g. chrome, edge]
+ - Version [e.g. 116]
+
+**Smartphone (please complete the following information):**
+ - Device: [e.g. Galaxy S22]
+ - OS: [e.g. Android 12]
+
+**Additional context**
+Add any other context about the problem here.