Add GitHub issue templates

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: bug
+assignees: ''
+
+---
+
+**Describe the bug**
+What's the bug? Be clear and concise in our explanation. Don't forget to include any context, error messages, logs, and screenshots required to understand the issue if applicable.
+
+**Reproduction steps:**
+Steps to reproduce the behaviour:
+1. Go to '...'
+2. Click on '....'
+3. Enter this command to '....'
+4. See error
+
+**System information (please complete the following information):**
+ - **Operating system and version:** [e.g. iOS]
+ - **Minetest version:** [e.g. 5.8.0]
+- **WorldEdit version:** 
+- **WorldEditAdditions version:** 
+
+Please add any other additional specific system information here too if you think it would help.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: enhancement
+assignees: ''
+
+---
+
+## Problem
+A clear and concise description of what the problem you want to solve is. e.g. I'm always frustrated when [...]
+
+## Solution
+Describe clearly the solution you'd like.
+
+## Alternatives
+A clear and concise description of any alternative solutions or features you've considered, and how they relate to your proposed feature.
+
+## Additional context
+Add any other context or screenshots about the feature request here.
+
+Don't forget to remove replace descriptions, but keep the headers.