docs: add issue templates

Author: tiamilani

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Report something that isn't working
+title: "[BUG] Concise description"
+labels: bug
+assignees: tiamilani
+type: Bug
+
+---
+
+**Checklist**
+- [ ] I searched existing issues and this hasn't been reported yet
+
+**What happened?**
+
+
+**What did you expect?**
+
+
+**How to reproduce**
+```python
+# minimal code to trigger the bug
+```
+
+**Error output**
+```
+# paste traceback or error message here
+```
+
+**Environment**
+- Python version:
+- eas-3d-pattern version:
+- OS:

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,17 @@
+---
+name: Feature request
+about: Suggest an improvement or new capability
+title: "[Feature] Concise description"
+labels: enhancement
+assignees: tiamilani
+type: Feature
+
+---
+
+**Problem**
+What are you trying to do that isn't currently possible or is harder than it should be?
+
+**Proposed solution**
+
+
+**Alternatives considered**