update template

Signed-off-by: dartcafe <github@dartcafe.de>

.github/ISSUE_TEMPLATE/feature_request.md

@@ -7,11 +7,15 @@ 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. I'm always frustrated when [...]
 
-**Describe the solution you'd like**
-A clear and concise description of what you want to happen.
+**Describe the goal you'd like to achieve**
+Describe what (goal) you want to achieve and why (value).
+A [user story](https://en.wikipedia.org/wiki/User_story) is the ideal good approach.
 
 **Describe alternatives you've considered**
 A clear and concise description of any alternative solutions or features you've considered.
 
+**Describe possible solutions**
+If you have a proposal for a way to get to the goal stated above, describe it here.
+
 **Additional context**
 Add any other context or screenshots about the feature request here.