chore: restore issue templates

.github/ISSUE_TEMPLATE/bug-report.md

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+---
+name: "🐛 Bug Report"
+about: "If something isn't working as expected"
+
+---
+## Bug Report
+
+**Current Behavior**
+A clear and concise description of the behavior.
+
+**Steps to Reproduce**
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected Behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Environment**
+- Flarum version: x.y.z
+- Website URL: http://example.com
+- Webserver: [e.g. apache, nginx]
+- Hosting environment: [e.g. shared, vps]
+- PHP version: x.y.z
+- Browser: [e.g. chrome 67, safari 11]
+
+```
+Output of "php flarum info", run this in terminal in your Flarum directory.
+```
+
+**Possible Solution**
+<!--- Only if you have suggestions or a fix for the bug -->
+
+**Additional Context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature-request.md

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+---
+name: "🚀 Feature Request"
+about: "I have a suggestion (and may want to implement it!)"
+
+---
+
+<!--
+IMPORTANT: Feature requests on this GitHub issue tracker are only accepted in case they have been approved by a core developer or contain extensive argumentation and directions for implementation. For all other feature requests, ideas and feedback please post in the Flarum Community: https://discuss.flarum.org/t/feedback.
+-->
+
+## Feature Request
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. eg. I have an issue when [...]
+
+**Describe the solution you'd like**
+A detailed description of your proposed solution. Include:
+- How the feature would work/behave
+- Any potential drawbacks
+- Maybe a screenshot, design, or example code
+
+**Justify why this feature belongs in Flarum's core, rather than in a third-party extension**
+Consider who this change will be useful to – most Flarum forums, or just a few?
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.

.github/ISSUE_TEMPLATE/support-question.md

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+---
+name: "🙋‍ Support Question"
+about: "If you have a question, please check out our forum or Discord!"
+
+---
+
+We primarily use GitHub as an issue tracker; for usage and support questions, please check out these resources below. Thanks!
+
+* Flarum Community: https://discuss.flarum.org/
+* Discord Chat: https://flarum.org/discord/
+* Twitter: https://twitter.com/Flarum