chore: add GitHub issue templates (#889)

.github/ISSUE_TEMPLATE/bug-report.md

@@ -0,0 +1,37 @@
+---
+name: Bug report
+about: Report a bug
+title: "Bug: "
+labels: "bug 🐛"
+---
+
+## OS Information
+
+- OS:
+- Browser (if applicable): 
+- Architecture:
+- `coder --version`:
+
+## Steps to Reproduce
+
+<!-- 1. -->
+<!-- 2. -->
+<!-- 3. -->
+
+## Expected
+
+<!-- What should happen? -->
+
+## Actual
+
+<!-- What actually happens? -->
+
+## Logs
+
+## Screenshot
+
+<!-- Ideally provide a screenshot, gif, video or screen recording. -->
+
+## Notes
+
+<!-- Anything else you want to share -->

.github/ISSUE_TEMPLATE/config.yaml

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+blank_issues_enabled: true
+contact_links:
+  - name: Question?
+    url: https://github.com/coder/coder/discussions/new?category=q-a
+    about: Ask for help on our GitHub Discussions board

.github/ISSUE_TEMPLATE/doc.md

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+---
+name: Documentation improvement
+about: Suggest a documentation improvement
+title: "Docs: "
+labels: "documentation 📝"
+---
+
+## What is your suggestion?
+
+## How will this improve the docs?
+
+## Are you interested in submitting a PR for this?