chore(templates): add issue templates

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the Bug**
+```A clear and concise description of what the bug is.```
+
+**Steps to Reproduce**
+```Please list the steps to reproduce the bug:```
+
+**Expected Behavior**
+```Describe what you expected to happen.```
+
+**Actual Behavior**
+```Describe what actually happened, including any error messages.```
+
+**Screenshots or Code**
+```If applicable, add screenshots or code snippets to help illustrate the bug.```
+
+**Environment**
+```Please complete the following information:```
+- OS: [e.g., Ubuntu 20.04, Windows 10]
+- Compiler: [e.g., GCC 9.3, MSVC 2019]
+- Version: [e.g., v1.0.0]
+
+**Additional Context**
+```Add any other context about the problem here, such as related issues, possible causes, or debugging steps you've taken.```

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.