feat: improve template for feature request

.github/ISSUE_TEMPLATE/feature_request.md

@@ -2,19 +2,21 @@
 name: Feature request
 about: Suggest an idea for this project
 title: ''
-labels: ''
+labels: 'feature'
 assignees: ''
 
 ---
 
-**Is your feature request related to a problem? Please describe.**
-A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+### Problem
+<!-- Please replace me by a clear and concise description of what the problem is. Ex. I'm always frustrated when [...] -->
 
-**Describe the solution you'd like**
-A clear and concise description of what you want to happen.
+### Proposed solution
+<!-- Please replace me by 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.
+### Additional context
+<!-- Please replace me by any other context or screenshots about the feature request here.) -->
 
-**Additional context**
-Add any other context or screenshots about the feature request here.
+### Mockups
+
+### Part of
+- #374 (Please remplace 525 by the most specific parent issue possible)