Add bug report template

This commit introduces a new bug report template tailored for the Vania backend framework. The template is designed to streamline the reporting process and ensure that all necessary details are provided to help diagnose and resolve issues effectively. It includes sections for describing the bug, steps to reproduce, expected behavior, environment specifics tailored to backend technologies like Dart and databases, and a placeholder for logs if applicable. This structured approach aims to improve the efficiency of our issue tracking and resolution process.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,37 @@
+---
+name: Bug report
+about: Create a report to help us improve Vania
+title: "[BUG] - Short Description of Issue"
+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**
+If applicable, add screenshots to help explain your problem.
+
+**Environment (please complete the following information):** 
+- Dart Version: [e.g. 2.10.5]
+- Vania Version: [e.g. 1.0.3]
+- Operating System: [e.g. Ubuntu 20.04, Windows 10]
+- Database: [e.g. PostgreSQL version, MySQL version]
+- Any other relevant backend services or middleware
+
+**Additional context**
+Add any other context about the problem here.
+
+**Logs**
+If applicable, include logs to help diagnose the issue.