chore: adding issue templates

Author: gureckis

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: "\U0001F41E Bug report"
+about: Create a report to help us improve
+title: ''
+type: Bug
+labels: ['pending triage']
+assignees: ''
+---
+
+<!-- ⚠️ Please DON'T ignore the issue template -->
+
+<!-- 💡 Consider upgrading to the latest version before sending the issue -->
+
+**Describe the bug**
+
+A clear and concise description of what the bug is.
+
+**Minimal reproduction**
+
+Steps to reproduce the behavior:
+
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See the error
+
+**Environment**
+
+- Smile version (or githash):
+- Browser:
+- OS:

.github/ISSUE_TEMPLATE/config.yml

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+contact_links:
+  - name: Questions & Discussions
+    url: https://github.com/nyuccl/smile/discussions
+    about: Use GitHub discussions for message-board style questions and discussions.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: "\U00002728 Feature request"
+about: Suggest an idea for this project
+title: ''
+type: Feature
+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.