Add feature request template

Author: MathieuBuisson

.github/ISSUE_TEMPLATE/Feature_request.md

@@ -0,0 +1,20 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is.  
+Ex. It is annoying when [...]
+
+**Describe the solution you would like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you have considered**
+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.  
+How is this affected you ?  
+Providing context helps us come up with a solution that is most useful and prioritize feature requests.