Update issue templates

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: "[BUG]"
+labels: bug
+assignees: ''
+
+---
+
+**What did you do?**
+
+- How was the cluster created?
+    - `k3d create -x A -y B`
+
+- What did you do afterwards?
+    - k3d commands?
+    - docker commands?
+    - OS operations (e.g. shutdown/reboot)?
+
+**What did you expect to happen?**
+
+Concise description of what you expected to happen after doing what you described above.
+
+**Screenshots or terminal output**
+
+If applicable, add screenshots or terminal output (code block) to help explain your problem.
+
+**Which OS & Architecture?**
+
+- Linux, Windows, MacOS / amd64, x86, ...?
+
+**Which version of `k3d`?**
+
+- output of `k3d --version`

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: "[FEATURE]"
+labels: enhancement
+assignees: ''
+
+---
+
+**Is your feature request related to a problem or a Pull Request?**
+
+Please link to the issue/PR here and explain how your request is related to it.
+
+**Scope of your request**
+
+Do you need...
+
+- a new command (next to e.g. `create`, `delete`, etc. used via `k3d <your-command>`)?
+- a new flag for a command (e.g. `k3d create --<your-flag>`)?
+    - which command?
+- different functionality for an existing command/flag
+    - which command or flag?
+
+**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.