github: create issue templates (#401)

Co-authored-by: Yann Régis Gianas <yann@regis-gianas.org>
Co-authored-by: Étienne Marais <etienne@maiste.fr>

.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: ''
+
+---
+
+> Related issue(s) or PR(s): 
+> Related project scope(s) (ex: client, CSS, grading, etc...) : 
+> Related user(s): 
+
+## Bug description
+
+A clear and concise description of what the bug is.
+
+### To Reproduce
+
+Steps to reproduce the behavior:
+
+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 document your problem.
+## Current configuration
+
+ - OS: [e.g. iOS]
+ - Browser [e.g. chrome, safari]
+ - Version [e.g. 22]
+
+## Additional context
+
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: 'Feat:'
+labels: feature
+assignees: ''
+
+---
+
+> Related issue(s) or PR(s): 
+> Related project scope(s) (ex: client, CSS, grading, etc...) : 
+> Related user(s): 
+
+## The problem
+
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+### Wanted solution
+
+A clear and concise description of what you want to happen.
+
+### Considered alternatives
+
+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/question.md

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+---
+name: Question
+about: Ask a question about this project
+title: 'Question:'
+labels: question
+assignees: ''
+
+---
+
+> Related issue(s) or PR(s): 
+> Related project scope(s) (ex: client, CSS, grading, etc...) : 
+> Related user(s): 
+
+## The question
+
+A clear and concise description of what you want to know.
+
+### What has already been tested
+
+A clear and concise description of what you have already tried.
+
+## Current configuration
+
+ - OS: [e.g. iOS]
+ - Browser [e.g. chrome, safari]
+ - Version [e.g. 22]
+
+## Additional context
+
+Add any other context or screenshots about the inquiry.