Add issue template

[eudesbarbosa]

Request
Implement issue template to facilitate screening: https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/configuring-issue-templates-for-your-repository

Example .github/ISSUE_TEMPLATE/bug_report.md:

---
name: Bug report
about: Create a report to help us improve
title: ''
labels: ''
assignees: ''

---

**Bug description**
A clear and concise description of the bug.

**How to replicate**
Steps to replicate the behaviour:
1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

**Expected behaviour**
A clear and concise description of what you expected to happen.

**Additional context**
Add any other context about the problem here.