Improve .github/ templates

.github/ISSUE_TEMPLATE/feature_request.md

@@ -3,7 +3,12 @@ name: ✨ Feature Request
 about: Any feature you find missing in Ledger Live? Discuss to suggest feature requests.
 ---
 
-<!--
-Please explain precisely what would be the feature.
-Before creating this, please make sure it was not requested yet!
--->
+- [ ] I have checked this feature was not yet requested.
+
+#### Part of the application
+
+<!-- what part of the application would be impacted by this feature? -->
+
+#### Description
+
+<!-- Explain precisely what is the feature about -->