chore: update feature request issue template

.github/ISSUE_TEMPLATE/feature_request.md

@@ -7,14 +7,21 @@ assignees: ''
 
 ---
 
-**Is your feature request related to a problem? Please describe.**
+## Description
+
 A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
 
-**Describe the solution you'd like**
+
+## Solution
+
 A clear and concise description of what you want to happen.
 
-**Describe alternatives you've considered**
+
+## Considerations
+
 A clear and concise description of any alternative solutions or features you've considered.
 
-**Additional context**
+
+## Additional context
+
 Add any other context or screenshots about the feature request here.