chore: add GitHub issue templates

.github/ISSUE_TEMPLATE/-u0001f41b-bug-report.md

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+---
+name: "\\U0001F41B Bug report"
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+Welcome to Academic's GitHub repo 👋
+
+We use GitHub only for bug reports and feature requests - it's our project management tool.
+
+For **help** and **questions**, please join our **[community chat](https://spectrum.chat/academic)** or use the **[forum](https://discourse.gohugo.io/c/themes)** 🚑.
+
+Also, you can search and browse the extensive [Academic](https://sourcethemes.com/academic/docs/) and [Hugo](https://gohugo.io/documentation/) **documentation**.
+
+For questions on _Blogdown_, please reach out to the [Blogdown community](https://github.com/rstudio/blogdown).
+
+### 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. See error '...'
+
+### Expected behavior
+
+A clear and concise description of what you expected to happen.
+
+### Technical details:
+
+* Academic Version:
+* Hugo Version:
+* Browser/OS:
+
+If applicable, add screenshots to help explain the issue.

.github/ISSUE_TEMPLATE/-u0001f680-feature-request.md

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+---
+name: "\\U0001F680 Feature request"
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+## Feature Request
+
+**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.

.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.